872791090 has 16 divisors (see below), whose sum is σ = 1571749272. Its totient is φ = 348955264.

The previous prime is 872791079. The next prime is 872791093. The reversal of 872791090 is 90197278.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 843728209 + 29062881 = 29047^2 + 5391^2 .

It is not an unprimeable number, because it can be changed into a prime (872791093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3972 + ... + 41968.

Almost surely, 2^872791090 is an apocalyptic number.

872791090 is a deficient number, since it is larger than the sum of its proper divisors (698958182).

872791090 is a wasteful number, since it uses less digits than its factorization.

872791090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40301.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 872791090 is about 29543.0379277420. The cubic root of 872791090 is about 955.6600573820.

The spelling of 872791090 in words is "eight hundred seventy-two million, seven hundred ninety-one thousand, ninety".