90420444 has 36 divisors (see below), whose sum is σ = 230374144. Its totient is φ = 29901312.

The previous prime is 90420437. The next prime is 90420469. The reversal of 90420444 is 44402409.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5317 + ... + 14460.

Almost surely, 2^90420444 is an apocalyptic number.

It is an amenable number.

90420444 is an abundant number, since it is smaller than the sum of its proper divisors (139953700).

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

90420444 is a wasteful number, since it uses less digits than its factorization.

90420444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19914 (or 19909 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 90420444 is about 9508.9665053569. The cubic root of 90420444 is about 448.8372351312.

The spelling of 90420444 in words is "ninety million, four hundred twenty thousand, four hundred forty-four".