879770491 has 2 divisors, whose sum is σ = 879770492. Its totient is φ = 879770490.

The previous prime is 879770473. The next prime is 879770531. The reversal of 879770491 is 194077978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 879770491 - 2⁵ = 879770459 is a prime.

It is a super-2 number, since 2×879770491² = 1547992233668762162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (879770461) 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 as a sum of consecutive naturals, namely, 439885245 + 439885246.

It is an arithmetic number, because the mean of its divisors is an integer number (439885246).

Almost surely, 2^879770491 is an apocalyptic number.

879770491 is a deficient number, since it is larger than the sum of its proper divisors (1).

879770491 is an equidigital number, since it uses as much as digits as its factorization.

879770491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 52.

The square root of 879770491 is about 29660.9253227205. The cubic root of 879770491 is about 958.2006555342.

The spelling of 879770491 in words is "eight hundred seventy-nine million, seven hundred seventy thousand, four hundred ninety-one".