23977899 has 12 divisors (see below), whose sum is σ = 37783512. Its totient is φ = 14532000.

The previous prime is 23977897. The next prime is 23977909. The reversal of 23977899 is 99877932.

It is not a de Polignac number, because 23977899 - 2¹ = 23977897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23977897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121002 + ... + 121199.

It is an arithmetic number, because the mean of its divisors is an integer number (3148626).

Almost surely, 2^23977899 is an apocalyptic number.

23977899 is a deficient number, since it is larger than the sum of its proper divisors (13805613).

23977899 is a wasteful number, since it uses less digits than its factorization.

23977899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242218 (or 242215 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 23977899 is about 4896.7232921618. The cubic root of 23977899 is about 288.3613447640.

It can be divided in two parts, 2397 and 7899, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 23977899 in words is "twenty-three million, nine hundred seventy-seven thousand, eight hundred ninety-nine".