23497009 has 4 divisors (see below), whose sum is σ = 24879204. Its totient is φ = 22114816.

The previous prime is 23496971. The next prime is 23497013. The reversal of 23497009 is 90079432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18533025 + 4963984 = 4305^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 23497009 - 2⁹ = 23496497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23497069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691072 + ... + 691105.

It is an arithmetic number, because the mean of its divisors is an integer number (6219801).

Almost surely, 2^23497009 is an apocalyptic number.

It is an amenable number.

23497009 is a deficient number, since it is larger than the sum of its proper divisors (1382195).

23497009 is a wasteful number, since it uses less digits than its factorization.

23497009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382194.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 23497009 is about 4847.3713495048. The cubic root of 23497009 is about 286.4205632232.

The spelling of 23497009 in words is "twenty-three million, four hundred ninety-seven thousand, nine".