879254991 has 24 divisors (see below), whose sum is σ = 1300126464. Its totient is φ = 572341200.

The previous prime is 879254951. The next prime is 879255007. The reversal of 879254991 is 199452978.

879254991 is a `hidden beast` number, since 8 + 7 + 9 + 2 + 549 + 91 = 666.

It is not a de Polignac number, because 879254991 - 2⁷ = 879254863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879254951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195316 + ... + 199766.

It is an arithmetic number, because the mean of its divisors is an integer number (54171936).

Almost surely, 2^879254991 is an apocalyptic number.

879254991 is a deficient number, since it is larger than the sum of its proper divisors (420871473).

879254991 is a wasteful number, since it uses less digits than its factorization.

879254991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971 (or 4968 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 879254991 is about 29652.2341654048. The cubic root of 879254991 is about 958.0134669620.

The spelling of 879254991 in words is "eight hundred seventy-nine million, two hundred fifty-four thousand, nine hundred ninety-one".