23902397 has 4 divisors (see below), whose sum is σ = 23935740. Its totient is φ = 23869056.

The previous prime is 23902387. The next prime is 23902429. The reversal of 23902397 is 79320932.

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 20557156 + 3345241 = 4534^2 + 1829^2 .

It is a cyclic number.

It is not a de Polignac number, because 23902397 - 2¹⁴ = 23886013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23902387) 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, 15572 + ... + 17037.

It is an arithmetic number, because the mean of its divisors is an integer number (5983935).

Almost surely, 2^23902397 is an apocalyptic number.

It is an amenable number.

23902397 is a deficient number, since it is larger than the sum of its proper divisors (33343).

23902397 is an equidigital number, since it uses as much as digits as its factorization.

23902397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33342.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 23902397 is about 4889.0077725444. The cubic root of 23902397 is about 288.0583608902.

The spelling of 23902397 in words is "twenty-three million, nine hundred two thousand, three hundred ninety-seven".