7001979 has 4 divisors (see below), whose sum is σ = 9335976. Its totient is φ = 4667984.

The previous prime is 7001927. The next prime is 7001999. The reversal of 7001979 is 9791007.

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 7001979 - 2⁷ = 7001851 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (7001999) 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, 1166994 + ... + 1166999.

It is an arithmetic number, because the mean of its divisors is an integer number (2333994).

Almost surely, 2^7001979 is an apocalyptic number.

7001979 is a deficient number, since it is larger than the sum of its proper divisors (2333997).

7001979 is a wasteful number, since it uses less digits than its factorization.

7001979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333996.

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 7001979 is about 2646.1252804809. The cubic root of 7001979 is about 191.3111436778.

The spelling of 7001979 in words is "seven million, one thousand, nine hundred seventy-nine".