7971379 has 8 divisors (see below), whose sum is σ = 8612352. Its totient is φ = 7334400.

The previous prime is 7971373. The next prime is 7971389. The reversal of 7971379 is 9731797.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7971379 - 2⁵ = 7971347 is a prime.

It is a Duffinian number.

7971379 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7971373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4179 + ... + 5779.

It is an arithmetic number, because the mean of its divisors is an integer number (1076544).

Almost surely, 2^7971379 is an apocalyptic number.

7971379 is a deficient number, since it is larger than the sum of its proper divisors (640973).

7971379 is a wasteful number, since it uses less digits than its factorization.

7971379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997.

The product of its digits is 83349, while the sum is 43.

The square root of 7971379 is about 2823.3630655656. The cubic root of 7971379 is about 199.7612066689.

The spelling of 7971379 in words is "seven million, nine hundred seventy-one thousand, three hundred seventy-nine".