23399638 has 4 divisors (see below), whose sum is σ = 35099460. Its totient is φ = 11699818.

The previous prime is 23399617. The next prime is 23399641. The reversal of 23399638 is 83699332.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 23399594 and 23399603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5849908 + ... + 5849911.

It is an arithmetic number, because the mean of its divisors is an integer number (8774865).

Almost surely, 2^23399638 is an apocalyptic number.

23399638 is a deficient number, since it is larger than the sum of its proper divisors (11699822).

23399638 is a wasteful number, since it uses less digits than its factorization.

23399638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11699821.

The product of its digits is 209952, while the sum is 43.

The square root of 23399638 is about 4837.3172316895. The cubic root of 23399638 is about 286.0243756426.

The spelling of 23399638 in words is "twenty-three million, three hundred ninety-nine thousand, six hundred thirty-eight".