23773139 has 4 divisors (see below), whose sum is σ = 25601856. Its totient is φ = 21944424.

The previous prime is 23773133. The next prime is 23773147. The reversal of 23773139 is 93137732.

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

It is a cyclic number.

It is not a de Polignac number, because 23773139 - 2¹⁶ = 23707603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23773099 and 23773108.

It is not an unprimeable number, because it can be changed into a prime (23773133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914339 + ... + 914364.

It is an arithmetic number, because the mean of its divisors is an integer number (6400464).

Almost surely, 2^23773139 is an apocalyptic number.

23773139 is a deficient number, since it is larger than the sum of its proper divisors (1828717).

23773139 is a wasteful number, since it uses less digits than its factorization.

23773139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828716.

The product of its digits is 23814, while the sum is 35.

The square root of 23773139 is about 4875.7706057607. The cubic root of 23773139 is about 287.5381736331.

The spelling of 23773139 in words is "twenty-three million, seven hundred seventy-three thousand, one hundred thirty-nine".