392444928 has 132 divisors (see below), whose sum is σ = 1147466320. Its totient is φ = 129171456.

The previous prime is 392444917. The next prime is 392444947. The reversal of 392444928 is 829444293.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 893733 + ... + 894171.

Almost surely, 2^392444928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 392444928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573733160).

392444928 is an abundant number, since it is smaller than the sum of its proper divisors (755021392).

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

392444928 is a wasteful number, since it uses less digits than its factorization.

392444928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 541 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 392444928 is about 19810.2228155061. Note that the first 3 decimals coincide. The cubic root of 392444928 is about 732.1379297551.

The spelling of 392444928 in words is "three hundred ninety-two million, four hundred forty-four thousand, nine hundred twenty-eight".