90433937 has 4 divisors (see below), whose sum is σ = 98655216. Its totient is φ = 82212660.

The previous prime is 90433891. The next prime is 90433943. The reversal of 90433937 is 73933409.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73933409 = 11 ⋅6721219.

It is a cyclic number.

It is not a de Polignac number, because 90433937 - 2⁶ = 90433873 is a prime.

It is a super-2 number, since 2×90433937² = 16356593922639938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90433937.

It is not an unprimeable number, because it can be changed into a prime (90433037) 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, 4110623 + ... + 4110644.

It is an arithmetic number, because the mean of its divisors is an integer number (24663804).

Almost surely, 2^90433937 is an apocalyptic number.

It is an amenable number.

90433937 is a deficient number, since it is larger than the sum of its proper divisors (8221279).

90433937 is a wasteful number, since it uses less digits than its factorization.

90433937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221278.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 90433937 is about 9509.6759671400. The cubic root of 90433937 is about 448.8595599482.

The spelling of 90433937 in words is "ninety million, four hundred thirty-three thousand, nine hundred thirty-seven".