90906909104 has 30 divisors (see below), whose sum is σ = 192152603604. Its totient is φ = 41319504160.

The previous prime is 90906909089. The next prime is 90906909133. The reversal of 90906909104 is 40190960909.

It is a super-2 number, since 2×90906909104² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3988589 + ... + 4011315.

Almost surely, 2^90906909104 is an apocalyptic number.

It is an amenable number.

90906909104 is an abundant number, since it is smaller than the sum of its proper divisors (101245694500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90906909104 is an frugal number, since it uses more digits than its factorization.

90906909104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45473 (or 22740 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 90906909104 in words is "ninety billion, nine hundred six million, nine hundred nine thousand, one hundred four".