90997079909 has 8 divisors (see below), whose sum is σ = 92964428160. Its totient is φ = 89050118976.

The previous prime is 90997079903. The next prime is 90997079911.

90997079909 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90997079909 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 (90997079903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5087807 + ... + 5105660.

It is an arithmetic number, because the mean of its divisors is an integer number (11620553520).

Almost surely, 2^90997079909 is an apocalyptic number.

It is an amenable number.

90997079909 is a deficient number, since it is larger than the sum of its proper divisors (1967348251).

90997079909 is a wasteful number, since it uses less digits than its factorization.

90997079909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10193659.

The product of its (nonzero) digits is 26040609, while the sum is 68.

The spelling of 90997079909 in words is "ninety billion, nine hundred ninety-seven million, seventy-nine thousand, nine hundred nine".