90719904 has 48 divisors (see below), whose sum is σ = 259791840. Its totient is φ = 27490560.

The previous prime is 90719899. The next prime is 90719969. The reversal of 90719904 is 40991709.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41899 + ... + 44010.

It is an arithmetic number, because the mean of its divisors is an integer number (5412330).

Almost surely, 2^90719904 is an apocalyptic number.

It is an amenable number.

90719904 is an abundant number, since it is smaller than the sum of its proper divisors (169071936).

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

90719904 is a wasteful number, since it uses less digits than its factorization.

90719904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85933 (or 85925 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 90719904 is about 9524.6996803049. The cubic root of 90719904 is about 449.3321847384.

The spelling of 90719904 in words is "ninety million, seven hundred nineteen thousand, nine hundred four".