90058551979 has 4 divisors (see below), whose sum is σ = 98245693080. Its totient is φ = 81871410880.

The previous prime is 90058551959. The next prime is 90058551997. The reversal of 90058551979 is 97915585009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97915585009 = 11 ⋅8901416819.

It is a cyclic number.

It is not a de Polignac number, because 90058551979 - 2²¹ = 90056454827 is a prime.

It is a super-2 number, since 2×90058551979² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90058551959) 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, 4093570534 + ... + 4093570555.

It is an arithmetic number, because the mean of its divisors is an integer number (24561423270).

Almost surely, 2^90058551979 is an apocalyptic number.

90058551979 is a deficient number, since it is larger than the sum of its proper divisors (8187141101).

90058551979 is a wasteful number, since it uses less digits than its factorization.

90058551979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187141100.

The product of its (nonzero) digits is 5103000, while the sum is 58.

The spelling of 90058551979 in words is "ninety billion, fifty-eight million, five hundred fifty-one thousand, nine hundred seventy-nine".