979421 has 6 divisors (see below), whose sum is σ = 1040730. Its totient is φ = 921536.

The previous prime is 979403. The next prime is 979423. The reversal of 979421 is 124979.

It can be written as a sum of positive squares in 3 ways, for example, as 688900 + 290521 = 830^2 + 539^2 .

It is a de Polignac number, because none of the positive numbers 2^k-979421 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 (979423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1406 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (173455).

2⁹⁷⁹⁴²¹ is an apocalyptic number.

It is an amenable number.

979421 is a deficient number, since it is larger than the sum of its proper divisors (61309).

979421 is a wasteful number, since it uses less digits than its factorization.

979421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423 (or 3406 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 979421 is about 989.6570112923. The cubic root of 979421 is about 99.3092732843.

The spelling of 979421 in words is "nine hundred seventy-nine thousand, four hundred twenty-one".