90236444 has 12 divisors (see below), whose sum is σ = 158004000. Its totient is φ = 45092448.

The previous prime is 90236431. The next prime is 90236501. The reversal of 90236444 is 44463209.

It is a self number, because there is not a number n which added to its sum of digits gives 90236444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2957 + ... + 13755.

It is an arithmetic number, because the mean of its divisors is an integer number (13167000).

Almost surely, 2^90236444 is an apocalyptic number.

It is an amenable number.

90236444 is a deficient number, since it is larger than the sum of its proper divisors (67767556).

90236444 is a wasteful number, since it uses less digits than its factorization.

90236444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12892 (or 12890 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 90236444 is about 9499.2864995220. The cubic root of 90236444 is about 448.5325763977.

The spelling of 90236444 in words is "ninety million, two hundred thirty-six thousand, four hundred forty-four".