23979946 has 4 divisors (see below), whose sum is σ = 35969922. Its totient is φ = 11989972.

The previous prime is 23979941. The next prime is 23979953. The reversal of 23979946 is 64997932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17015625 + 6964321 = 4125^2 + 2639^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 23979946.

It is not an unprimeable number, because it can be changed into a prime (23979941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5994985 + ... + 5994988.

Almost surely, 2^23979946 is an apocalyptic number.

23979946 is a deficient number, since it is larger than the sum of its proper divisors (11989976).

23979946 is a wasteful number, since it uses less digits than its factorization.

23979946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11989975.

The product of its digits is 734832, while the sum is 49.

The square root of 23979946 is about 4896.9323050253. The cubic root of 23979946 is about 288.3695503602.

The spelling of 23979946 in words is "twenty-three million, nine hundred seventy-nine thousand, nine hundred forty-six".