23879811 has 4 divisors (see below), whose sum is σ = 31839752. Its totient is φ = 15919872.

The previous prime is 23879809. The next prime is 23879813. The reversal of 23879811 is 11897832.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23879809) and next prime (23879813).

It is not a de Polignac number, because 23879811 - 2¹ = 23879809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23879811.

It is not an unprimeable number, because it can be changed into a prime (23879813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3979966 + ... + 3979971.

It is an arithmetic number, because the mean of its divisors is an integer number (7959938).

Almost surely, 2^23879811 is an apocalyptic number.

23879811 is a deficient number, since it is larger than the sum of its proper divisors (7959941).

23879811 is an equidigital number, since it uses as much as digits as its factorization.

23879811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959940.

The product of its digits is 24192, while the sum is 39.

The square root of 23879811 is about 4886.6973509723. The cubic root of 23879811 is about 287.9676010043.

The spelling of 23879811 in words is "twenty-three million, eight hundred seventy-nine thousand, eight hundred eleven".