392981274 has 96 divisors (see below), whose sum is σ = 1021184640. Its totient is φ = 112021056.

The previous prime is 392981263. The next prime is 392981321. The reversal of 392981274 is 472189293.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 907362 + ... + 907794.

It is an arithmetic number, because the mean of its divisors is an integer number (10637340).

Almost surely, 2^392981274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 392981274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510592320).

392981274 is an abundant number, since it is smaller than the sum of its proper divisors (628203366).

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

392981274 is an frugal number, since it uses more digits than its factorization.

392981274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 445 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 392981274 is about 19823.7552950999. The cubic root of 392981274 is about 732.4713102875.

The spelling of 392981274 in words is "three hundred ninety-two million, nine hundred eighty-one thousand, two hundred seventy-four".