23929929 has 6 divisors (see below), whose sum is σ = 34565466. Its totient is φ = 15953280.

The previous prime is 23929903. The next prime is 23929933. The reversal of 23929929 is 92992932.

It can be written as a sum of positive squares in only one way, i.e., 19316025 + 4613904 = 4395^2 + 2148^2 .

It is not a de Polignac number, because 23929929 - 2⁸ = 23929673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23979929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1329432 + ... + 1329449.

It is an arithmetic number, because the mean of its divisors is an integer number (5760911).

Almost surely, 2^23929929 is an apocalyptic number.

It is an amenable number.

23929929 is a deficient number, since it is larger than the sum of its proper divisors (10635537).

23929929 is a wasteful number, since it uses less digits than its factorization.

23929929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658887 (or 2658884 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 23929929 is about 4891.8226664506. The cubic root of 23929929 is about 288.1689185565.

It can be divided in two parts, 2392 and 9929, that added together give a palindrome (12321).

The spelling of 23929929 in words is "twenty-three million, nine hundred twenty-nine thousand, nine hundred twenty-nine".