90344927979 has 12 divisors (see below), whose sum is σ = 130861738800. Its totient is φ = 60062178384.

The previous prime is 90344927977. The next prime is 90344927983. The reversal of 90344927979 is 97972944309.

90344927979 is a `hidden beast` number, since 9 + 0 + 3 + 4 + 492 + 79 + 79 = 666.

It is not a de Polignac number, because 90344927979 - 2¹ = 90344927977 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (90344927977) 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 11 ways as a sum of consecutive naturals, for example, 13977724 + ... + 13984185.

It is an arithmetic number, because the mean of its divisors is an integer number (10905144900).

Almost surely, 2^90344927979 is an apocalyptic number.

90344927979 is a deficient number, since it is larger than the sum of its proper divisors (40516810821).

90344927979 is a wasteful number, since it uses less digits than its factorization.

90344927979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27962274 (or 27962271 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 90344927979 in words is "ninety billion, three hundred forty-four million, nine hundred twenty-seven thousand, nine hundred seventy-nine".