7894979 has 4 divisors (see below), whose sum is σ = 7967520. Its totient is φ = 7822440.

The previous prime is 7894973. The next prime is 7894981. The reversal of 7894979 is 9794987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9794987 = 23 ⋅425869.

It is a cyclic number.

It is not a de Polignac number, because 7894979 - 2⁸ = 7894723 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 7894979.

It is not an unprimeable number, because it can be changed into a prime (7894973) 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, 36107 + ... + 36324.

It is an arithmetic number, because the mean of its divisors is an integer number (1991880).

Almost surely, 2^7894979 is an apocalyptic number.

7894979 is a deficient number, since it is larger than the sum of its proper divisors (72541).

7894979 is a wasteful number, since it uses less digits than its factorization.

7894979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72540.

The product of its digits is 1143072, while the sum is 53.

The square root of 7894979 is about 2809.8005267278. The cubic root of 7894979 is about 199.1209671666.

The spelling of 7894979 in words is "seven million, eight hundred ninety-four thousand, nine hundred seventy-nine".