90890484 has 12 divisors (see below), whose sum is σ = 212077824. Its totient is φ = 30296824.

The previous prime is 90890477. The next prime is 90890489. The reversal of 90890484 is 48409809.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×90890484² = 16522160163508512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90890489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787092 + ... + 3787115.

It is an arithmetic number, because the mean of its divisors is an integer number (17673152).

Almost surely, 2^90890484 is an apocalyptic number.

It is an amenable number.

90890484 is an abundant number, since it is smaller than the sum of its proper divisors (121187340).

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

90890484 is a wasteful number, since it uses less digits than its factorization.

90890484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574214 (or 7574212 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 90890484 is about 9533.6500879778. The cubic root of 90890484 is about 449.6136337963.

The spelling of 90890484 in words is "ninety million, eight hundred ninety thousand, four hundred eighty-four".