23955861 has 4 divisors (see below), whose sum is σ = 31941152. Its totient is φ = 15970572.

The previous prime is 23955851. The next prime is 23955871. The reversal of 23955861 is 16855932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (23955851) and next prime (23955871).

It is not a de Polignac number, because 23955861 - 2⁶ = 23955797 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 (23955851) 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 3 ways as a sum of consecutive naturals, for example, 3992641 + ... + 3992646.

It is an arithmetic number, because the mean of its divisors is an integer number (7985288).

Almost surely, 2^23955861 is an apocalyptic number.

It is an amenable number.

23955861 is a deficient number, since it is larger than the sum of its proper divisors (7985291).

23955861 is an equidigital number, since it uses as much as digits as its factorization.

23955861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985290.

The product of its digits is 64800, while the sum is 39.

The square root of 23955861 is about 4894.4724945596. The cubic root of 23955861 is about 288.2729737292.

It can be divided in two parts, 2395 and 5861, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 23955861 in words is "twenty-three million, nine hundred fifty-five thousand, eight hundred sixty-one".