90634231139 has 2 divisors, whose sum is σ = 90634231140. Its totient is φ = 90634231138.

The previous prime is 90634231111. The next prime is 90634231169. The reversal of 90634231139 is 93113243609.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90634231139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90634231096 and 90634231105.

It is not a weakly prime, because it can be changed into another prime (90634231169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45317115569 + 45317115570.

It is an arithmetic number, because the mean of its divisors is an integer number (45317115570).

Almost surely, 2^90634231139 is an apocalyptic number.

90634231139 is a deficient number, since it is larger than the sum of its proper divisors (1).

90634231139 is an equidigital number, since it uses as much as digits as its factorization.

90634231139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 90634231139 in words is "ninety billion, six hundred thirty-four million, two hundred thirty-one thousand, one hundred thirty-nine".