23999197 has 2 divisors, whose sum is σ = 23999198. Its totient is φ = 23999196.

The previous prime is 23999191. The next prime is 23999219. The reversal of 23999197 is 79199932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23951236 + 47961 = 4894^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 23999197 - 2²³ = 15610589 is a prime.

It is a super-2 number, since 2×23999197² = 1151922913289618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23999197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23999191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11999598 + 11999599.

It is an arithmetic number, because the mean of its divisors is an integer number (11999599).

Almost surely, 2^23999197 is an apocalyptic number.

It is an amenable number.

23999197 is a deficient number, since it is larger than the sum of its proper divisors (1).

23999197 is an equidigital number, since it uses as much as digits as its factorization.

23999197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 49.

The square root of 23999197 is about 4898.8975290365. The cubic root of 23999197 is about 288.4466970078.

The spelling of 23999197 in words is "twenty-three million, nine hundred ninety-nine thousand, one hundred ninety-seven".