912613409 has 2 divisors, whose sum is σ = 912613410. Its totient is φ = 912613408.

The previous prime is 912613349. The next prime is 912613411. The reversal of 912613409 is 904316219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606538384 + 306075025 = 24628^2 + 17495^2 .

It is a cyclic number.

It is not a de Polignac number, because 912613409 - 2⁸ = 912613153 is a prime.

Together with 912613411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (912613439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456306704 + 456306705.

It is an arithmetic number, because the mean of its divisors is an integer number (456306705).

Almost surely, 2^912613409 is an apocalyptic number.

It is an amenable number.

912613409 is a deficient number, since it is larger than the sum of its proper divisors (1).

912613409 is an equidigital number, since it uses as much as digits as its factorization.

912613409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 912613409 is about 30209.4920347893. The cubic root of 912613409 is about 969.9788881932.

The spelling of 912613409 in words is "nine hundred twelve million, six hundred thirteen thousand, four hundred nine".