23897739 has 8 divisors (see below), whose sum is σ = 31888080. Its totient is φ = 15919616.

The previous prime is 23897719. The next prime is 23897743. The reversal of 23897739 is 93779832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23897739 - 2¹⁶ = 23832203 is a prime.

It is a super-2 number, since 2×23897739² = 1142203858624242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23897719) 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 7 ways as a sum of consecutive naturals, for example, 3559 + ... + 7775.

It is an arithmetic number, because the mean of its divisors is an integer number (3986010).

Almost surely, 2^23897739 is an apocalyptic number.

23897739 is a deficient number, since it is larger than the sum of its proper divisors (7990341).

23897739 is a wasteful number, since it uses less digits than its factorization.

23897739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109.

The product of its digits is 571536, while the sum is 48.

The square root of 23897739 is about 4888.5313745541. The cubic root of 23897739 is about 288.0396478016.

The spelling of 23897739 in words is "twenty-three million, eight hundred ninety-seven thousand, seven hundred thirty-nine".