920790390 has 64 divisors (see below), whose sum is σ = 2435279616. Its totient is φ = 221380992.

The previous prime is 920790389. The next prime is 920790413. The reversal of 920790390 is 93097029.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 10684 + ... + 44223.

It is an arithmetic number, because the mean of its divisors is an integer number (38051244).

Almost surely, 2^920790390 is an apocalyptic number.

920790390 is an abundant number, since it is smaller than the sum of its proper divisors (1514489226).

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

920790390 is a wasteful number, since it uses less digits than its factorization.

920790390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54973.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 920790390 is about 30344.5281723081. The cubic root of 920790390 is about 972.8672698585.

The spelling of 920790390 in words is "nine hundred twenty million, seven hundred ninety thousand, three hundred ninety".