90444012 has 24 divisors (see below), whose sum is σ = 223450416. Its totient is φ = 28374528.

The previous prime is 90444001. The next prime is 90444059. The reversal of 90444012 is 21044409.

It is a super-2 number, since 2×90444012² = 16360238613312288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221473 + ... + 221880.

It is an arithmetic number, because the mean of its divisors is an integer number (9310434).

Almost surely, 2^90444012 is an apocalyptic number.

It is an amenable number.

90444012 is an abundant number, since it is smaller than the sum of its proper divisors (133006404).

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

90444012 is a wasteful number, since it uses less digits than its factorization.

90444012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443377 (or 443375 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 90444012 is about 9510.2056760093. The cubic root of 90444012 is about 448.8762280719.

The spelling of 90444012 in words is "ninety million, four hundred forty-four thousand, twelve".