2392639 has 4 divisors (see below), whose sum is σ = 2406040. Its totient is φ = 2379240.

The previous prime is 2392619. The next prime is 2392661. The reversal of 2392639 is 9362932.

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 2392639 - 2⁹ = 2392127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2392619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6429 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (601510).

2^2392639 is an apocalyptic number.

2392639 is a deficient number, since it is larger than the sum of its proper divisors (13401).

2392639 is a wasteful number, since it uses less digits than its factorization.

2392639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13400.

The product of its digits is 17496, while the sum is 34.

The square root of 2392639 is about 1546.8157614920. The cubic root of 2392639 is about 133.7495693933.

The spelling of 2392639 in words is "two million, three hundred ninety-two thousand, six hundred thirty-nine".