90316791 has 12 divisors (see below), whose sum is σ = 136129968. Its totient is φ = 57593184.

The previous prime is 90316789. The next prime is 90316847. The reversal of 90316791 is 19761309.

It is not a de Polignac number, because 90316791 - 2¹ = 90316789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90316711) 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 11 ways as a sum of consecutive naturals, for example, 217950 + ... + 218363.

It is an arithmetic number, because the mean of its divisors is an integer number (11344164).

Almost surely, 2^90316791 is an apocalyptic number.

90316791 is a deficient number, since it is larger than the sum of its proper divisors (45813177).

90316791 is a wasteful number, since it uses less digits than its factorization.

90316791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436342 (or 436339 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 90316791 is about 9503.5146656382. The cubic root of 90316791 is about 448.6656621533.

The spelling of 90316791 in words is "ninety million, three hundred sixteen thousand, seven hundred ninety-one".