23907397 has 4 divisors (see below), whose sum is σ = 24731820. Its totient is φ = 23082976.

The previous prime is 23907391. The next prime is 23907437. The reversal of 23907397 is 79370932.

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 14853316 + 9054081 = 3854^2 + 3009^2 .

It is a cyclic number.

It is not a de Polignac number, because 23907397 - 2¹⁵ = 23874629 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23907391) 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, 412168 + ... + 412225.

It is an arithmetic number, because the mean of its divisors is an integer number (6182955).

Almost surely, 2^23907397 is an apocalyptic number.

It is an amenable number.

23907397 is a deficient number, since it is larger than the sum of its proper divisors (824423).

23907397 is an equidigital number, since it uses as much as digits as its factorization.

23907397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824422.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 23907397 is about 4889.5190970074. The cubic root of 23907397 is about 288.0784452271.

The spelling of 23907397 in words is "twenty-three million, nine hundred seven thousand, three hundred ninety-seven".