7159979 has 4 divisors (see below), whose sum is σ = 7536840. Its totient is φ = 6783120.

The previous prime is 7159963. The next prime is 7159987. The reversal of 7159979 is 9799517.

It is a happy number.

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 7159979 - 2⁴ = 7159963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7159939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188402 + ... + 188439.

It is an arithmetic number, because the mean of its divisors is an integer number (1884210).

Almost surely, 2^7159979 is an apocalyptic number.

7159979 is a deficient number, since it is larger than the sum of its proper divisors (376861).

7159979 is a wasteful number, since it uses less digits than its factorization.

7159979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376860.

The product of its digits is 178605, while the sum is 47.

The square root of 7159979 is about 2675.8137080148. The cubic root of 7159979 is about 192.7394355747.

The spelling of 7159979 in words is "seven million, one hundred fifty-nine thousand, nine hundred seventy-nine".