808391490 has 16 divisors (see below), whose sum is σ = 1940139648. Its totient is φ = 215571056.

The previous prime is 808391471. The next prime is 808391513. The reversal of 808391490 is 94193808.

It is a super-2 number, since 2×808391490² = 1306993602208840200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13473162 + ... + 13473221.

It is an arithmetic number, because the mean of its divisors is an integer number (121258728).

Almost surely, 2^808391490 is an apocalyptic number.

808391490 is an abundant number, since it is smaller than the sum of its proper divisors (1131748158).

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

808391490 is a wasteful number, since it uses less digits than its factorization.

808391490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946393.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 808391490 is about 28432.2262582444. The cubic root of 808391490 is about 931.5523040590.

The spelling of 808391490 in words is "eight hundred eight million, three hundred ninety-one thousand, four hundred ninety".