90044457 has 4 divisors (see below), whose sum is σ = 120059280. Its totient is φ = 60029636.

The previous prime is 90044453. The next prime is 90044473. The reversal of 90044457 is 75444009.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90044457 - 2² = 90044453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90044453) 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, 15007407 + ... + 15007412.

It is an arithmetic number, because the mean of its divisors is an integer number (30014820).

Almost surely, 2^90044457 is an apocalyptic number.

It is an amenable number.

90044457 is a deficient number, since it is larger than the sum of its proper divisors (30014823).

90044457 is a wasteful number, since it uses less digits than its factorization.

90044457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30014822.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 90044457 is about 9489.1757808568. The cubic root of 90044457 is about 448.2142513281.

The spelling of 90044457 in words is "ninety million, forty-four thousand, four hundred fifty-seven".