979391 has 8 divisors (see below), whose sum is σ = 1126944. Its totient is φ = 833760.

The previous prime is 979379. The next prime is 979403. The reversal of 979391 is 193979.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (979379) and next prime (979403).

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 979391 - 2⁶ = 979327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979361) 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, 881 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (140868).

2⁹⁷⁹³⁹¹ is an apocalyptic number.

979391 is a deficient number, since it is larger than the sum of its proper divisors (147553).

979391 is a wasteful number, since it uses less digits than its factorization.

979391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 15309, while the sum is 38.

The square root of 979391 is about 989.6418544100. The cubic root of 979391 is about 99.3082593150.

The spelling of 979391 in words is "nine hundred seventy-nine thousand, three hundred ninety-one".