11497909 has 2 divisors, whose sum is σ = 11497910. Its totient is φ = 11497908.

The previous prime is 11497901. The next prime is 11497919. The reversal of 11497909 is 90979411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11410884 + 87025 = 3378^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 11497909 - 2³ = 11497901 is a prime.

It is a super-2 number, since 2×11497909² = 264403822744562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11497901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5748954 + 5748955.

It is an arithmetic number, because the mean of its divisors is an integer number (5748955).

Almost surely, 2^11497909 is an apocalyptic number.

It is an amenable number.

11497909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11497909 is an equidigital number, since it uses as much as digits as its factorization.

11497909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 11497909 is about 3390.8566764167. The cubic root of 11497909 is about 225.7041904787.

The spelling of 11497909 in words is "eleven million, four hundred ninety-seven thousand, nine hundred nine".