90791039 has 2 divisors, whose sum is σ = 90791040. Its totient is φ = 90791038.

The previous prime is 90790993. The next prime is 90791111. The reversal of 90791039 is 93019709.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90791039 - 2⁸ = 90790783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90790993 and 90791011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90791539) 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 as a sum of consecutive naturals, namely, 45395519 + 45395520.

It is an arithmetic number, because the mean of its divisors is an integer number (45395520).

Almost surely, 2^90791039 is an apocalyptic number.

90791039 is a deficient number, since it is larger than the sum of its proper divisors (1).

90791039 is an equidigital number, since it uses as much as digits as its factorization.

90791039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 90791039 is about 9528.4331870460. The cubic root of 90791039 is about 449.4495970257.

The spelling of 90791039 in words is "ninety million, seven hundred ninety-one thousand, thirty-nine".