439426920 has 128 divisors (see below), whose sum is σ = 1351520640. Its totient is φ = 114263040.

The previous prime is 439426901. The next prime is 439426951. The reversal of 439426920 is 29624934.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1266187 + ... + 1266533.

It is an arithmetic number, because the mean of its divisors is an integer number (10558755).

Almost surely, 2^439426920 is an apocalyptic number.

439426920 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 439426920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675760320).

439426920 is an abundant number, since it is smaller than the sum of its proper divisors (912093720).

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

439426920 is a wasteful number, since it uses less digits than its factorization.

439426920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 439426920 is about 20962.5122540215. The cubic root of 439426920 is about 760.2601371720.

The spelling of 439426920 in words is "four hundred thirty-nine million, four hundred twenty-six thousand, nine hundred twenty".