23189869 has 4 divisors (see below), whose sum is σ = 23272096. Its totient is φ = 23107644.

The previous prime is 23189867. The next prime is 23189893. The reversal of 23189869 is 96898132.

23189869 = T₂₅₅ + T₂₅₆ + ... + T₅₃₇.

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 a cyclic number.

It is not a de Polignac number, because 23189869 - 2¹ = 23189867 is a prime.

It is a super-2 number, since 2×23189869² = 1075540048474322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23189867) 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, 40689 + ... + 41254.

It is an arithmetic number, because the mean of its divisors is an integer number (5818024).

Almost surely, 2^23189869 is an apocalyptic number.

It is an amenable number.

23189869 is a deficient number, since it is larger than the sum of its proper divisors (82227).

23189869 is an equidigital number, since it uses as much as digits as its factorization.

23189869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82226.

The product of its digits is 186624, while the sum is 46.

The square root of 23189869 is about 4815.5860494856. The cubic root of 23189869 is about 285.1671083176.

It can be divided in two parts, 231 and 89869, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 23189869 in words is "twenty-three million, one hundred eighty-nine thousand, eight hundred sixty-nine".