392927490 has 128 divisors (see below), whose sum is σ = 1078272000. Its totient is φ = 101787840.

The previous prime is 392927441. The next prime is 392927497. The reversal of 392927490 is 94729293.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (392927497) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1974411 + ... + 1974609.

It is an arithmetic number, because the mean of its divisors is an integer number (8424000).

Almost surely, 2^392927490 is an apocalyptic number.

392927490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 392927490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539136000).

392927490 is an abundant number, since it is smaller than the sum of its proper divisors (685344510).

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

392927490 is a wasteful number, since it uses less digits than its factorization.

392927490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 392927490 is about 19822.3986944063. The cubic root of 392927490 is about 732.4378930596.

The spelling of 392927490 in words is "three hundred ninety-two million, nine hundred twenty-seven thousand, four hundred ninety".