90403217238 has 32 divisors (see below), whose sum is σ = 187560898560. Its totient is φ = 29027269440.

The previous prime is 90403217231. The next prime is 90403217257. The reversal of 90403217238 is 83271230409.

It is a junction number, because it is equal to n+sod(n) for n = 90403217196 and 90403217205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90403217231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306470 + ... + 2345337.

It is an arithmetic number, because the mean of its divisors is an integer number (5861278080).

Almost surely, 2^90403217238 is an apocalyptic number.

90403217238 is an abundant number, since it is smaller than the sum of its proper divisors (97157681322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90403217238 is a wasteful number, since it uses less digits than its factorization.

90403217238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651932.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 90403217238 in words is "ninety billion, four hundred three million, two hundred seventeen thousand, two hundred thirty-eight".