7921079 has 4 divisors (see below), whose sum is σ = 7926840. Its totient is φ = 7915320.

The previous prime is 7921061. The next prime is 7921087. The reversal of 7921079 is 9701297.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7921079 - 2¹⁶ = 7855543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7921579) 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, 524 + ... + 4014.

It is an arithmetic number, because the mean of its divisors is an integer number (1981710).

Almost surely, 2^7921079 is an apocalyptic number.

7921079 is a deficient number, since it is larger than the sum of its proper divisors (5761).

7921079 is a wasteful number, since it uses less digits than its factorization.

7921079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 7921079 is about 2814.4411523427. The cubic root of 7921079 is about 199.3401503866.

The spelling of 7921079 in words is "seven million, nine hundred twenty-one thousand, seventy-nine".