23718949 has 4 divisors (see below), whose sum is σ = 23825536. Its totient is φ = 23612364.

The previous prime is 23718917. The next prime is 23718971. The reversal of 23718949 is 94981732.

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 23718949 - 2⁵ = 23718917 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 (23718449) 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, 52959 + ... + 53404.

It is an arithmetic number, because the mean of its divisors is an integer number (5956384).

Almost surely, 2^23718949 is an apocalyptic number.

It is an amenable number.

23718949 is a deficient number, since it is larger than the sum of its proper divisors (106587).

23718949 is a wasteful number, since it uses less digits than its factorization.

23718949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106586.

The product of its digits is 108864, while the sum is 43.

The square root of 23718949 is about 4870.2103650664. The cubic root of 23718949 is about 287.3195298387.

The spelling of 23718949 in words is "twenty-three million, seven hundred eighteen thousand, nine hundred forty-nine".