90838917423 has 8 divisors (see below), whose sum is σ = 134576174000. Its totient is φ = 60559278264.

The previous prime is 90838917413. The next prime is 90838917437. The reversal of 90838917423 is 32471983809.

90838917423 is a `hidden beast` number, since 90 + 8 + 389 + 174 + 2 + 3 = 666.

It is not a de Polignac number, because 90838917423 - 2²¹ = 90836820271 is a prime.

It is a super-2 number, since 2×90838917423² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90838917423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90838917413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1682202148 + ... + 1682202201.

It is an arithmetic number, because the mean of its divisors is an integer number (16822021750).

Almost surely, 2^90838917423 is an apocalyptic number.

90838917423 is a deficient number, since it is larger than the sum of its proper divisors (43737256577).

90838917423 is a wasteful number, since it uses less digits than its factorization.

90838917423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364404358 (or 3364404352 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 90838917423 in words is "ninety billion, eight hundred thirty-eight million, nine hundred seventeen thousand, four hundred twenty-three".