23493639 has 8 divisors (see below), whose sum is σ = 33734512. Its totient is φ = 14457600.

The previous prime is 23493611. The next prime is 23493661. The reversal of 23493639 is 93639432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23493639 - 2¹⁷ = 23362567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 602401 = 23493639 / (2 + 3 + 4 + 9 + 3 + 6 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23493597 and 23493606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23493539) 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 7 ways as a sum of consecutive naturals, for example, 301162 + ... + 301239.

It is an arithmetic number, because the mean of its divisors is an integer number (4216814).

Almost surely, 2^23493639 is an apocalyptic number.

23493639 is a deficient number, since it is larger than the sum of its proper divisors (10240873).

23493639 is a wasteful number, since it uses less digits than its factorization.

23493639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602417.

The product of its digits is 104976, while the sum is 39.

The square root of 23493639 is about 4847.0237259580. The cubic root of 23493639 is about 286.4068695165.

The spelling of 23493639 in words is "twenty-three million, four hundred ninety-three thousand, six hundred thirty-nine".