90119920 has 40 divisors (see below), whose sum is σ = 228579120. Its totient is φ = 32770560.

The previous prime is 90119893. The next prime is 90119921. The reversal of 90119920 is 2991109.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90119921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50325 + ... + 52084.

It is an arithmetic number, because the mean of its divisors is an integer number (5714478).

Almost surely, 2^90119920 is an apocalyptic number.

It is an amenable number.

90119920 is an abundant number, since it is smaller than the sum of its proper divisors (138459200).

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

90119920 is a wasteful number, since it uses less digits than its factorization.

90119920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102433 (or 102427 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 90119920 is about 9493.1512154816. The cubic root of 90119920 is about 448.3394270794.

The spelling of 90119920 in words is "ninety million, one hundred nineteen thousand, nine hundred twenty".