23871949 has 8 divisors (see below), whose sum is σ = 24294200. Its totient is φ = 23452416.

The previous prime is 23871937. The next prime is 23871971. The reversal of 23871949 is 94917832.

It can be written as a sum of positive squares in 4 ways, for example, as 1716100 + 22155849 = 1310^2 + 4707^2 .

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 23871949 - 2⁷ = 23871821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23871989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25009 + ... + 25945.

It is an arithmetic number, because the mean of its divisors is an integer number (3036775).

Almost surely, 2^23871949 is an apocalyptic number.

It is an amenable number.

23871949 is a deficient number, since it is larger than the sum of its proper divisors (422251).

23871949 is an equidigital number, since it uses as much as digits as its factorization.

23871949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359.

The product of its digits is 108864, while the sum is 43.

The square root of 23871949 is about 4885.8928559681. The cubic root of 23871949 is about 287.9359948107.

The spelling of 23871949 in words is "twenty-three million, eight hundred seventy-one thousand, nine hundred forty-nine".