23438859 has 4 divisors (see below), whose sum is σ = 31251816. Its totient is φ = 15625904.

The previous prime is 23438843. The next prime is 23438887. The reversal of 23438859 is 95883432.

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 23438859 - 2⁴ = 23438843 is a prime.

It is a super-2 number, since 2×23438859² = 1098760222443762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23438859.

It is not an unprimeable number, because it can be changed into a prime (23438819) 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, 3906474 + ... + 3906479.

It is an arithmetic number, because the mean of its divisors is an integer number (7812954).

Almost surely, 2^23438859 is an apocalyptic number.

23438859 is a deficient number, since it is larger than the sum of its proper divisors (7812957).

23438859 is an equidigital number, since it uses as much as digits as its factorization.

23438859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812956.

The product of its digits is 207360, while the sum is 42.

The square root of 23438859 is about 4841.3695376412. The cubic root of 23438859 is about 286.1840917906.

It can be divided in two parts, 234 and 38859, that added together give a palindrome (39093).

The spelling of 23438859 in words is "twenty-three million, four hundred thirty-eight thousand, eight hundred fifty-nine".