23862139 has 4 divisors (see below), whose sum is σ = 27271024. Its totient is φ = 20453256.

The previous prime is 23862131. The next prime is 23862143. The reversal of 23862139 is 93126832.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23862139 - 2³ = 23862131 is a prime.

It is a super-3 number, since 3×23862139³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23862131) 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, 1704432 + ... + 1704445.

It is an arithmetic number, because the mean of its divisors is an integer number (6817756).

Almost surely, 2^23862139 is an apocalyptic number.

23862139 is a deficient number, since it is larger than the sum of its proper divisors (3408885).

23862139 is an equidigital number, since it uses as much as digits as its factorization.

23862139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408884.

The product of its digits is 15552, while the sum is 34.

The square root of 23862139 is about 4884.8888421335. Note that the first 4 decimals coincide. The cubic root of 23862139 is about 287.8965476878.

The spelling of 23862139 in words is "twenty-three million, eight hundred sixty-two thousand, one hundred thirty-nine".