90316487 has 2 divisors, whose sum is σ = 90316488. Its totient is φ = 90316486.

The previous prime is 90316459. The next prime is 90316489. The reversal of 90316487 is 78461309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90316487 - 2⁸ = 90316231 is a prime.

Together with 90316489, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90316487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90316489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45158243 + 45158244.

It is an arithmetic number, because the mean of its divisors is an integer number (45158244).

Almost surely, 2^90316487 is an apocalyptic number.

90316487 is a deficient number, since it is larger than the sum of its proper divisors (1).

90316487 is an equidigital number, since it uses as much as digits as its factorization.

90316487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 90316487 is about 9503.4986715420. The cubic root of 90316487 is about 448.6651587603.

The spelling of 90316487 in words is "ninety million, three hundred sixteen thousand, four hundred eighty-seven".