23729869 has 4 divisors (see below), whose sum is σ = 23750496. Its totient is φ = 23709244.

The previous prime is 23729837. The next prime is 23729873. The reversal of 23729869 is 96892732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23729869 - 2⁵ = 23729837 is a prime.

It is a super-2 number, since 2×23729869² = 1126213365514322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23729369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8479 + ... + 10924.

It is an arithmetic number, because the mean of its divisors is an integer number (5937624).

Almost surely, 2^23729869 is an apocalyptic number.

It is an amenable number.

23729869 is a deficient number, since it is larger than the sum of its proper divisors (20627).

23729869 is a wasteful number, since it uses less digits than its factorization.

23729869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20626.

The product of its digits is 326592, while the sum is 46.

The square root of 23729869 is about 4871.3313375298. The cubic root of 23729869 is about 287.3636162201.

The spelling of 23729869 in words is "twenty-three million, seven hundred twenty-nine thousand, eight hundred sixty-nine".