90413789915 has 4 divisors (see below), whose sum is σ = 108496547904. Its totient is φ = 72331031928.

The previous prime is 90413789857. The next prime is 90413789933. The reversal of 90413789915 is 51998731409.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90413789915 - 2¹⁰ = 90413788891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9041378987 + ... + 9041378996.

It is an arithmetic number, because the mean of its divisors is an integer number (27124136976).

Almost surely, 2^90413789915 is an apocalyptic number.

90413789915 is a deficient number, since it is larger than the sum of its proper divisors (18082757989).

90413789915 is a wasteful number, since it uses less digits than its factorization.

90413789915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18082757988.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 90413789915 in words is "ninety billion, four hundred thirteen million, seven hundred eighty-nine thousand, nine hundred fifteen".