90038633 has 4 divisors (see below), whose sum is σ = 90091920. Its totient is φ = 89985348.

The previous prime is 90038609. The next prime is 90038657. The reversal of 90038633 is 33683009.

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 an interprime number because it is at equal distance from previous prime (90038609) and next prime (90038657).

It is a cyclic number.

It is not a de Polignac number, because 90038633 - 2⁶ = 90038569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90038633.

It is not an unprimeable number, because it can be changed into a prime (90038233) 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, 24023 + ... + 27516.

It is an arithmetic number, because the mean of its divisors is an integer number (22522980).

Almost surely, 2^90038633 is an apocalyptic number.

It is an amenable number.

90038633 is a deficient number, since it is larger than the sum of its proper divisors (53287).

90038633 is a wasteful number, since it uses less digits than its factorization.

90038633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53286.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 90038633 is about 9488.8688999269. The cubic root of 90038633 is about 448.2045877458.

The spelling of 90038633 in words is "ninety million, thirty-eight thousand, six hundred thirty-three".