23949873 has 6 divisors (see below), whose sum is σ = 34594274. Its totient is φ = 15966576.

The previous prime is 23949851. The next prime is 23949883. The reversal of 23949873 is 37894932.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16916769 + 7033104 = 4113^2 + 2652^2 .

It is not a de Polignac number, because 23949873 - 2¹² = 23945777 is a prime.

It is a super-2 number, since 2×23949873² = 1147192833432258, 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 (23949803) 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 5 ways as a sum of consecutive naturals, for example, 1330540 + ... + 1330557.

Almost surely, 2^23949873 is an apocalyptic number.

It is an amenable number.

23949873 is a deficient number, since it is larger than the sum of its proper divisors (10644401).

23949873 is a wasteful number, since it uses less digits than its factorization.

23949873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661103 (or 2661100 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 23949873 is about 4893.8607458733. The cubic root of 23949873 is about 288.2489528517.

The spelling of 23949873 in words is "twenty-three million, nine hundred forty-nine thousand, eight hundred seventy-three".