90404433 has 12 divisors (see below), whose sum is σ = 149239168. Its totient is φ = 51659640.

The previous prime is 90404417. The next prime is 90404449. The reversal of 90404433 is 33440409.

It is an interprime number because it is at equal distance from previous prime (90404417) and next prime (90404449).

It is not a de Polignac number, because 90404433 - 2⁴ = 90404417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90404397 and 90404406.

It is not an unprimeable number, because it can be changed into a prime (90404333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717433 + ... + 717558.

Almost surely, 2^90404433 is an apocalyptic number.

It is an amenable number.

90404433 is a deficient number, since it is larger than the sum of its proper divisors (58834735).

90404433 is a wasteful number, since it uses less digits than its factorization.

90404433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435004 (or 1435001 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 90404433 is about 9508.1245784855. The cubic root of 90404433 is about 448.8107412807.

The spelling of 90404433 in words is "ninety million, four hundred four thousand, four hundred thirty-three".