909091913986 has 32 divisors (see below), whose sum is σ = 1415023603200. Its totient is φ = 437515122240.

The previous prime is 909091913971. The next prime is 909091914007. The reversal of 909091913986 is 689319190909.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116203671 + ... + 116211493.

It is an arithmetic number, because the mean of its divisors is an integer number (44219487600).

Almost surely, 2^909091913986 is an apocalyptic number.

909091913986 is a deficient number, since it is larger than the sum of its proper divisors (505931689214).

909091913986 is a wasteful number, since it uses less digits than its factorization.

909091913986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13794.

The product of its (nonzero) digits is 8503056, while the sum is 64.

The spelling of 909091913986 in words is "nine hundred nine billion, ninety-one million, nine hundred thirteen thousand, nine hundred eighty-six".