7923408290 has 48 divisors (see below), whose sum is σ = 17039081592. Its totient is φ = 2643169536.

The previous prime is 7923408281. The next prime is 7923408307. The reversal of 7923408290 is 928043297.

It can be written as a sum of positive squares in 4 ways, for example, as 5992772569 + 1930635721 = 77413^2 + 43939^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200387 + ... + 236646.

Almost surely, 2^7923408290 is an apocalyptic number.

7923408290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7923408290 is an abundant number, since it is smaller than the sum of its proper divisors (9115673302).

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

7923408290 is a wasteful number, since it uses less digits than its factorization.

7923408290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437091 (or 437084 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 7923408290 is about 89013.5286908681. The cubic root of 7923408290 is about 1993.5968794006.

The spelling of 7923408290 in words is "seven billion, nine hundred twenty-three million, four hundred eight thousand, two hundred ninety".