2393639 has 8 divisors (see below), whose sum is σ = 2568240. Its totient is φ = 2223936.

The previous prime is 2393627. The next prime is 2393647. The reversal of 2393639 is 9363932.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2393639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2393599 and 2393608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2393659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 2195.

It is an arithmetic number, because the mean of its divisors is an integer number (321030).

2^2393639 is an apocalyptic number.

2393639 is a deficient number, since it is larger than the sum of its proper divisors (174601).

2393639 is a wasteful number, since it uses less digits than its factorization.

2393639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449.

The product of its digits is 26244, while the sum is 35.

The square root of 2393639 is about 1547.1389724262. The cubic root of 2393639 is about 133.7682002775.

The spelling of 2393639 in words is "two million, three hundred ninety-three thousand, six hundred thirty-nine".