877939091 has 2 divisors, whose sum is σ = 877939092. Its totient is φ = 877939090.

The previous prime is 877939037. The next prime is 877939093. The reversal of 877939091 is 190939778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 877939091 - 2¹⁴ = 877922707 is a prime.

Together with 877939093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (877939093) 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 as a sum of consecutive naturals, namely, 438969545 + 438969546.

It is an arithmetic number, because the mean of its divisors is an integer number (438969546).

Almost surely, 2^877939091 is an apocalyptic number.

877939091 is a deficient number, since it is larger than the sum of its proper divisors (1).

877939091 is an equidigital number, since it uses as much as digits as its factorization.

877939091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 877939091 is about 29630.0369726398. The cubic root of 877939091 is about 957.5353048221.

The spelling of 877939091 in words is "eight hundred seventy-seven million, nine hundred thirty-nine thousand, ninety-one".