90412717 has 2 divisors, whose sum is σ = 90412718. Its totient is φ = 90412716.

The previous prime is 90412669. The next prime is 90412727. The reversal of 90412717 is 71721409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82828201 + 7584516 = 9101^2 + 2754^2 .

It is a cyclic number.

It is not a de Polignac number, because 90412717 - 2¹¹ = 90410669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90412727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45206358 + 45206359.

It is an arithmetic number, because the mean of its divisors is an integer number (45206359).

Almost surely, 2^90412717 is an apocalyptic number.

It is an amenable number.

90412717 is a deficient number, since it is larger than the sum of its proper divisors (1).

90412717 is an equidigital number, since it uses as much as digits as its factorization.

90412717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 90412717 is about 9508.5601959498. The cubic root of 90412717 is about 448.8244494382.

The spelling of 90412717 in words is "ninety million, four hundred twelve thousand, seven hundred seventeen".