23449399 has 2 divisors, whose sum is σ = 23449400. Its totient is φ = 23449398.

The previous prime is 23449369. The next prime is 23449427. The reversal of 23449399 is 99394432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23449399 - 2⁵ = 23449367 is a prime.

It is a super-2 number, since 2×23449399² = 1099748626922402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23449369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11724699 + 11724700.

It is an arithmetic number, because the mean of its divisors is an integer number (11724700).

Almost surely, 2^23449399 is an apocalyptic number.

23449399 is a deficient number, since it is larger than the sum of its proper divisors (1).

23449399 is an equidigital number, since it uses as much as digits as its factorization.

23449399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 23449399 is about 4842.4579502563. The cubic root of 23449399 is about 286.2269825062.

The spelling of 23449399 in words is "twenty-three million, four hundred forty-nine thousand, three hundred ninety-nine".