90459426239 has 16 divisors (see below), whose sum is σ = 111434476608. Its totient is φ = 71508137472.

The previous prime is 90459426203. The next prime is 90459426251. The reversal of 90459426239 is 93262495409.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90459426239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90459426139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343322 + ... + 546615.

It is an arithmetic number, because the mean of its divisors is an integer number (6964654788).

Almost surely, 2^90459426239 is an apocalyptic number.

90459426239 is a deficient number, since it is larger than the sum of its proper divisors (20975050369).

90459426239 is a wasteful number, since it uses less digits than its factorization.

90459426239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891074.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 90459426239 in words is "ninety billion, four hundred fifty-nine million, four hundred twenty-six thousand, two hundred thirty-nine".