979945 has 8 divisors (see below), whose sum is σ = 1207944. Its totient is φ = 762624.

The previous prime is 979921. The next prime is 979949. The reversal of 979945 is 549979.

It can be written as a sum of positive squares in 4 ways, for example, as 426409 + 553536 = 653^2 + 744^2 .

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 979945 - 2¹¹ = 977897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979949) 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, 2464 + ... + 2833.

It is an arithmetic number, because the mean of its divisors is an integer number (150993).

2⁹⁷⁹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

979945 is a deficient number, since it is larger than the sum of its proper divisors (227999).

979945 is a wasteful number, since it uses less digits than its factorization.

979945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339.

The product of its digits is 102060, while the sum is 43.

The square root of 979945 is about 989.9217140764. The cubic root of 979945 is about 99.3269806106.

The spelling of 979945 in words is "nine hundred seventy-nine thousand, nine hundred forty-five".