90316879 has 2 divisors, whose sum is σ = 90316880. Its totient is φ = 90316878.

The previous prime is 90316867. The next prime is 90316921. The reversal of 90316879 is 97861309.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90316879 - 2⁵ = 90316847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90316279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45158439 + 45158440.

It is an arithmetic number, because the mean of its divisors is an integer number (45158440).

Almost surely, 2^90316879 is an apocalyptic number.

90316879 is a deficient number, since it is larger than the sum of its proper divisors (1).

90316879 is an equidigital number, since it uses as much as digits as its factorization.

90316879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 90316879 is about 9503.5192955031. The cubic root of 90316879 is about 448.6658078721.

It can be divided in two parts, 90 and 316879, that added together give a square (316969 = 563²).

The spelling of 90316879 in words is "ninety million, three hundred sixteen thousand, eight hundred seventy-nine".