90959591 has 8 divisors (see below), whose sum is σ = 92473344. Its totient is φ = 89452440.

The previous prime is 90959551. The next prime is 90959597. The reversal of 90959591 is 19595909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90959591 - 2⁶ = 90959527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90959597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31490 + ... + 34256.

It is an arithmetic number, because the mean of its divisors is an integer number (11559168).

Almost surely, 2^90959591 is an apocalyptic number.

90959591 is a deficient number, since it is larger than the sum of its proper divisors (1513753).

90959591 is a wasteful number, since it uses less digits than its factorization.

90959591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301.

The product of its (nonzero) digits is 164025, while the sum is 47.

The square root of 90959591 is about 9537.2737718910. The cubic root of 90959591 is about 449.7275568990.

The spelling of 90959591 in words is "ninety million, nine hundred fifty-nine thousand, five hundred ninety-one".