90974558 has 4 divisors (see below), whose sum is σ = 136461840. Its totient is φ = 45487278.

The previous prime is 90974551. The next prime is 90974579. The reversal of 90974558 is 85547909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85547909 = 101 ⋅847009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90974551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22743638 + ... + 22743641.

It is an arithmetic number, because the mean of its divisors is an integer number (34115460).

Almost surely, 2^90974558 is an apocalyptic number.

90974558 is a deficient number, since it is larger than the sum of its proper divisors (45487282).

90974558 is a wasteful number, since it uses less digits than its factorization.

90974558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45487281.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 90974558 is about 9538.0583978082. The cubic root of 90974558 is about 449.7522224423.

The spelling of 90974558 in words is "ninety million, nine hundred seventy-four thousand, five hundred fifty-eight".