90407070931 has 2 divisors, whose sum is σ = 90407070932. Its totient is φ = 90407070930.

The previous prime is 90407070851. The next prime is 90407070973. The reversal of 90407070931 is 13907070409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90407070931 - 2⁹ = 90407070419 is a prime.

It is a super-4 number, since 4×90407070931⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (90407070431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45203535465 + 45203535466.

It is an arithmetic number, because the mean of its divisors is an integer number (45203535466).

Almost surely, 2^90407070931 is an apocalyptic number.

90407070931 is a deficient number, since it is larger than the sum of its proper divisors (1).

90407070931 is an equidigital number, since it uses as much as digits as its factorization.

90407070931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The spelling of 90407070931 in words is "ninety billion, four hundred seven million, seventy thousand, nine hundred thirty-one".