90958087 has 4 divisors (see below), whose sum is σ = 99227016. Its totient is φ = 82689160.

The previous prime is 90958079. The next prime is 90958097. The reversal of 90958087 is 78085909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78085909 = 11 ⋅7098719.

It is a cyclic number.

It is not a de Polignac number, because 90958087 - 2³ = 90958079 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 (90958027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4134448 + ... + 4134469.

It is an arithmetic number, because the mean of its divisors is an integer number (24806754).

Almost surely, 2^90958087 is an apocalyptic number.

90958087 is a deficient number, since it is larger than the sum of its proper divisors (8268929).

90958087 is a wasteful number, since it uses less digits than its factorization.

90958087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268928.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 90958087 is about 9537.1949230369. The cubic root of 90958087 is about 449.7250781647.

It can be divided in two parts, 909 and 58087, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 90958087 in words is "ninety million, nine hundred fifty-eight thousand, eighty-seven".