979381 has 4 divisors (see below), whose sum is σ = 1054732. Its totient is φ = 904032.

The previous prime is 979379. The next prime is 979403. The reversal of 979381 is 183979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 324900 + 654481 = 570^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 979381 - 2¹ = 979379 is a prime.

It is a super-2 number, since 2×979381² = 1918374286322, which contains 22 as substring.

It is a Duffinian number.

979381 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 979381.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37656 + ... + 37681.

It is an arithmetic number, because the mean of its divisors is an integer number (263683).

2⁹⁷⁹³⁸¹ is an apocalyptic number.

It is an amenable number.

979381 is a deficient number, since it is larger than the sum of its proper divisors (75351).

979381 is a wasteful number, since it uses less digits than its factorization.

979381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75350.

The product of its digits is 13608, while the sum is 37.

The square root of 979381 is about 989.6368020643. The cubic root of 979381 is about 99.3079213206.

The spelling of 979381 in words is "nine hundred seventy-nine thousand, three hundred eighty-one".