11497009 has 4 divisors (see below), whose sum is σ = 11528704. Its totient is φ = 11465316.

The previous prime is 11496997. The next prime is 11497019. The reversal of 11497009 is 90079411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90079411 = 3329 ⋅27059.

It is a cyclic number.

It is not a de Polignac number, because 11497009 - 2⁹ = 11496497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11497019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15297 + ... + 16030.

It is an arithmetic number, because the mean of its divisors is an integer number (2882176).

Almost surely, 2^11497009 is an apocalyptic number.

It is an amenable number.

11497009 is a deficient number, since it is larger than the sum of its proper divisors (31695).

11497009 is an equidigital number, since it uses as much as digits as its factorization.

11497009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31694.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 11497009 is about 3390.7239639935. The cubic root of 11497009 is about 225.6983013188.

The spelling of 11497009 in words is "eleven million, four hundred ninety-seven thousand, nine".