90505908964 has 27 divisors (see below), whose sum is σ = 159207722947. Its totient is φ = 45019200248.

The previous prime is 90505908959. The next prime is 90505908973. The reversal of 90505908964 is 46980950509.

It is a happy number.

The square root of 90505908964 is 300842.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 216004347 + ... + 216004765.

Almost surely, 2^90505908964 is an apocalyptic number.

90505908964 is the 300842-nd square number.

It is an amenable number.

90505908964 is a deficient number, since it is larger than the sum of its proper divisors (68701813983).

90505908964 is an frugal number, since it uses more digits than its factorization.

90505908964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 90505908964 in words is "ninety billion, five hundred five million, nine hundred eight thousand, nine hundred sixty-four".