23998397 has 4 divisors (see below), whose sum is σ = 24061440. Its totient is φ = 23935356.

The previous prime is 23998369. The next prime is 23998409. The reversal of 23998397 is 79389932.

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.

It is a cyclic number.

It is not a de Polignac number, because 23998397 - 2⁶ = 23998333 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 (23998357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30947 + ... + 31712.

It is an arithmetic number, because the mean of its divisors is an integer number (6015360).

Almost surely, 2^23998397 is an apocalyptic number.

It is an amenable number.

23998397 is a deficient number, since it is larger than the sum of its proper divisors (63043).

23998397 is an equidigital number, since it uses as much as digits as its factorization.

23998397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63042.

The product of its digits is 734832, while the sum is 50.

The square root of 23998397 is about 4898.8158773320. The cubic root of 23998397 is about 288.4434919017.

The spelling of 23998397 in words is "twenty-three million, nine hundred ninety-eight thousand, three hundred ninety-seven".