23903897 has 4 divisors (see below), whose sum is σ = 24078516. Its totient is φ = 23729280.

The previous prime is 23903857. The next prime is 23903903. The reversal of 23903897 is 79830932.

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 11485321 + 12418576 = 3389^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 23903897 - 2⁶ = 23903833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23903857) 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, 87104 + ... + 87377.

It is an arithmetic number, because the mean of its divisors is an integer number (6019629).

Almost surely, 2^23903897 is an apocalyptic number.

It is an amenable number.

23903897 is a deficient number, since it is larger than the sum of its proper divisors (174619).

23903897 is a wasteful number, since it uses less digits than its factorization.

23903897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174618.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 23903897 is about 4889.1611754983. The cubic root of 23903897 is about 288.0643864853.

The spelling of 23903897 in words is "twenty-three million, nine hundred three thousand, eight hundred ninety-seven".