23849943 has 16 divisors (see below), whose sum is σ = 35352576. Its totient is φ = 14202720.

The previous prime is 23849939. The next prime is 23849957. The reversal of 23849943 is 34994832.

It is a happy number.

It is not a de Polignac number, because 23849943 - 2² = 23849939 is a prime.

It is a super-2 number, since 2×23849943² = 1137639562206498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23849895 and 23849904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23849143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8655 + ... + 11072.

It is an arithmetic number, because the mean of its divisors is an integer number (2209536).

Almost surely, 2^23849943 is an apocalyptic number.

23849943 is a deficient number, since it is larger than the sum of its proper divisors (11502633).

23849943 is a wasteful number, since it uses less digits than its factorization.

23849943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19774.

The product of its digits is 186624, while the sum is 42.

The square root of 23849943 is about 4883.6403430228. The cubic root of 23849943 is about 287.8474911097.

The spelling of 23849943 in words is "twenty-three million, eight hundred forty-nine thousand, nine hundred forty-three".