23994147 has 4 divisors (see below), whose sum is σ = 31992200. Its totient is φ = 15996096.

The previous prime is 23994137. The next prime is 23994149. The reversal of 23994147 is 74149932.

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

It is not a de Polignac number, because 23994147 - 2¹⁴ = 23977763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23994149) 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, 3999022 + ... + 3999027.

It is an arithmetic number, because the mean of its divisors is an integer number (7998050).

Almost surely, 2^23994147 is an apocalyptic number.

23994147 is a deficient number, since it is larger than the sum of its proper divisors (7998053).

23994147 is an equidigital number, since it uses as much as digits as its factorization.

23994147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7998052.

The product of its digits is 54432, while the sum is 39.

The square root of 23994147 is about 4898.3820798300. The cubic root of 23994147 is about 288.4264635808.

The spelling of 23994147 in words is "twenty-three million, nine hundred ninety-four thousand, one hundred forty-seven".