439130440 has 128 divisors (see below), whose sum is σ = 1164533760. Its totient is φ = 145926144.

The previous prime is 439130437. The next prime is 439130443. The reversal of 439130440 is 44031934.

It is an interprime number because it is at equal distance from previous prime (439130437) and next prime (439130443).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 439130399 and 439130408.

It is not an unprimeable number, because it can be changed into a prime (439130443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884564 + ... + 1884796.

It is an arithmetic number, because the mean of its divisors is an integer number (9097920).

Almost surely, 2^439130440 is an apocalyptic number.

439130440 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 439130440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582266880).

439130440 is an abundant number, since it is smaller than the sum of its proper divisors (725403320).

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

439130440 is a wasteful number, since it uses less digits than its factorization.

439130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 439130440 is about 20955.4393893328. The cubic root of 439130440 is about 760.0891169736.

The spelling of 439130440 in words is "four hundred thirty-nine million, one hundred thirty thousand, four hundred forty".