23893421 has 4 divisors (see below), whose sum is σ = 24116832. Its totient is φ = 23670012.

The previous prime is 23893409. The next prime is 23893427. The reversal of 23893421 is 12439832.

It is a happy number.

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 23893421 - 2⁶ = 23893357 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 (23893427) 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, 111545 + ... + 111758.

It is an arithmetic number, because the mean of its divisors is an integer number (6029208).

Almost surely, 2^23893421 is an apocalyptic number.

It is an amenable number.

23893421 is a deficient number, since it is larger than the sum of its proper divisors (223411).

23893421 is a wasteful number, since it uses less digits than its factorization.

23893421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223410.

The product of its digits is 10368, while the sum is 32.

The square root of 23893421 is about 4888.0897086694. The cubic root of 23893421 is about 288.0222984600.

The spelling of 23893421 in words is "twenty-three million, eight hundred ninety-three thousand, four hundred twenty-one".