23870989 has 4 divisors (see below), whose sum is σ = 23996160. Its totient is φ = 23745820.

The previous prime is 23870983. The next prime is 23870993. The reversal of 23870989 is 98907832.

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 23870989 - 2¹⁷ = 23739917 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23870983) 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, 62299 + ... + 62680.

It is an arithmetic number, because the mean of its divisors is an integer number (5999040).

Almost surely, 2^23870989 is an apocalyptic number.

It is an amenable number.

23870989 is a deficient number, since it is larger than the sum of its proper divisors (125171).

23870989 is a wasteful number, since it uses less digits than its factorization.

23870989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125170.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 23870989 is about 4885.7946129570. The cubic root of 23870989 is about 287.9321350189.

The spelling of 23870989 in words is "twenty-three million, eight hundred seventy thousand, nine hundred eighty-nine".