23399705 has 24 divisors (see below), whose sum is σ = 32934600. Its totient is φ = 15912960.

The previous prime is 23399669. The next prime is 23399707. The reversal of 23399705 is 50799332.

It can be written as a sum of positive squares in 4 ways, for example, as 2569609 + 20830096 = 1603^2 + 4564^2 .

It is not a de Polignac number, because 23399705 - 2⁶ = 23399641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23399707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36185 + ... + 36825.

It is an arithmetic number, because the mean of its divisors is an integer number (1372275).

Almost surely, 2^23399705 is an apocalyptic number.

It is an amenable number.

23399705 is a deficient number, since it is larger than the sum of its proper divisors (9534895).

23399705 is a wasteful number, since it uses less digits than its factorization.

23399705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 23399705 is about 4837.3241570108. The cubic root of 23399705 is about 286.0246486328.

The spelling of 23399705 in words is "twenty-three million, three hundred ninety-nine thousand, seven hundred five".