7940339 has 4 divisors (see below), whose sum is σ = 8662200. Its totient is φ = 7218480.

The previous prime is 7940333. The next prime is 7940341. The reversal of 7940339 is 9330497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9330497 = 11 ⋅848227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7940339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7940299 and 7940308.

It is not an unprimeable number, because it can be changed into a prime (7940333) 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 3 ways as a sum of consecutive naturals, for example, 360914 + ... + 360935.

It is an arithmetic number, because the mean of its divisors is an integer number (2165550).

Almost surely, 2^7940339 is an apocalyptic number.

7940339 is a deficient number, since it is larger than the sum of its proper divisors (721861).

7940339 is a wasteful number, since it uses less digits than its factorization.

7940339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721860.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 7940339 is about 2817.8607133781. The cubic root of 7940339 is about 199.5015839389.

The spelling of 7940339 in words is "seven million, nine hundred forty thousand, three hundred thirty-nine".