7994939 has 4 divisors (see below), whose sum is σ = 8014440. Its totient is φ = 7975440.

The previous prime is 7994927. The next prime is 7994941. The reversal of 7994939 is 9394997.

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 7994939 - 2²⁰ = 6946363 is a prime.

It is a super-2 number, since 2×7994939² = 127838099227442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7994969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9122 + ... + 9959.

It is an arithmetic number, because the mean of its divisors is an integer number (2003610).

Almost surely, 2^7994939 is an apocalyptic number.

7994939 is a deficient number, since it is larger than the sum of its proper divisors (19501).

7994939 is a wasteful number, since it uses less digits than its factorization.

7994939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19500.

The product of its digits is 551124, while the sum is 50.

The square root of 7994939 is about 2827.5323163494. The cubic root of 7994939 is about 199.9578161032.

The spelling of 7994939 in words is "seven million, nine hundred ninety-four thousand, nine hundred thirty-nine".