979975 has 6 divisors (see below), whose sum is σ = 1215200. Its totient is φ = 783960.

The previous prime is 979969. The next prime is 979987. The reversal of 979975 is 579979.

It is not a de Polignac number, because 979975 - 2¹¹ = 977927 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19575 + ... + 19624.

2⁹⁷⁹⁹⁷⁵ is an apocalyptic number.

979975 is a deficient number, since it is larger than the sum of its proper divisors (235225).

979975 is a wasteful number, since it uses less digits than its factorization.

979975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39209 (or 39204 counting only the distinct ones).

The product of its digits is 178605, while the sum is 46.

The square root of 979975 is about 989.9368666738. The cubic root of 979975 is about 99.3279941978.

The spelling of 979975 in words is "nine hundred seventy-nine thousand, nine hundred seventy-five".