439325640 has 384 divisors, whose sum is σ = 1660176000. Its totient is φ = 103154688.

The previous prime is 439325609. The next prime is 439325641. The reversal of 439325640 is 46523934.

439325640 is a `hidden beast` number, since 4 + 3 + 9 + 3 + 2 + 5 + 640 = 666.

It is a super-2 number, since 2×439325640² = 386014035922819200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 439325595 and 439325604.

It is not an unprimeable number, because it can be changed into a prime (439325641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5293039 + ... + 5293121.

It is an arithmetic number, because the mean of its divisors is an integer number (4323375).

Almost surely, 2^439325640 is an apocalyptic number.

439325640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439325640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830088000).

439325640 is an abundant number, since it is smaller than the sum of its proper divisors (1220850360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439325640 is a wasteful number, since it uses less digits than its factorization.

439325640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 439325640 is about 20960.0963738242. The cubic root of 439325640 is about 760.2017239224.

The spelling of 439325640 in words is "four hundred thirty-nine million, three hundred twenty-five thousand, six hundred forty".