113497409 has 2 divisors, whose sum is σ = 113497410. Its totient is φ = 113497408.

The previous prime is 113497381. The next prime is 113497421. The reversal of 113497409 is 904794311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111365809 + 2131600 = 10553^2 + 1460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113497409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (113497309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56748704 + 56748705.

It is an arithmetic number, because the mean of its divisors is an integer number (56748705).

Almost surely, 2^113497409 is an apocalyptic number.

It is an amenable number.

113497409 is a deficient number, since it is larger than the sum of its proper divisors (1).

113497409 is an equidigital number, since it uses as much as digits as its factorization.

113497409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 113497409 is about 10653.5162739820. The cubic root of 113497409 is about 484.1671453879.

The spelling of 113497409 in words is "one hundred thirteen million, four hundred ninety-seven thousand, four hundred nine".