439193140 has 12 divisors (see below), whose sum is σ = 922305636. Its totient is φ = 175677248.

The previous prime is 439193137. The next prime is 439193141. The reversal of 439193140 is 41391934.

It can be written as a sum of positive squares in 2 ways, for example, as 162103824 + 277089316 = 12732^2 + 16646^2 .

It is a super-2 number, since 2×439193140² = 385781228446119200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 439193096 and 439193105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439193141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10979809 + ... + 10979848.

It is an arithmetic number, because the mean of its divisors is an integer number (76858803).

Almost surely, 2^439193140 is an apocalyptic number.

It is an amenable number.

439193140 is an abundant number, since it is smaller than the sum of its proper divisors (483112496).

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

439193140 is a wasteful number, since it uses less digits than its factorization.

439193140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21959666 (or 21959664 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 439193140 is about 20956.9353675579. The cubic root of 439193140 is about 760.1252909782.

The spelling of 439193140 in words is "four hundred thirty-nine million, one hundred ninety-three thousand, one hundred forty".