90402637339 has 4 divisors (see below), whose sum is σ = 103317299824. Its totient is φ = 77487974856.

The previous prime is 90402637321. The next prime is 90402637387. The reversal of 90402637339 is 93373620409.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90402637339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90402631339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6457331232 + ... + 6457331245.

It is an arithmetic number, because the mean of its divisors is an integer number (25829324956).

Almost surely, 2^90402637339 is an apocalyptic number.

90402637339 is a deficient number, since it is larger than the sum of its proper divisors (12914662485).

90402637339 is a wasteful number, since it uses less digits than its factorization.

90402637339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12914662484.

The product of its (nonzero) digits is 734832, while the sum is 46.

The spelling of 90402637339 in words is "ninety billion, four hundred two million, six hundred thirty-seven thousand, three hundred thirty-nine".