23897899 has 2 divisors, whose sum is σ = 23897900. Its totient is φ = 23897898.

The previous prime is 23897857. The next prime is 23897917. The reversal of 23897899 is 99879832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23897899 - 2⁷ = 23897771 is a prime.

It is a super-2 number, since 2×23897899² = 1142219153228402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23897099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948949 + 11948950.

It is an arithmetic number, because the mean of its divisors is an integer number (11948950).

Almost surely, 2^23897899 is an apocalyptic number.

23897899 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897899 is an equidigital number, since it uses as much as digits as its factorization.

23897899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The square root of 23897899 is about 4888.5477393598. The cubic root of 23897899 is about 288.0402906273.

The spelling of 23897899 in words is "twenty-three million, eight hundred ninety-seven thousand, eight hundred ninety-nine".