979873 has 2 divisors, whose sum is σ = 979874. Its totient is φ = 979872.

The previous prime is 979831. The next prime is 979883. The reversal of 979873 is 378979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 937024 + 42849 = 968^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 979873 - 2⁹ = 979361 is a prime.

It is a super-2 number, since 2×979873² = 1920302192258, which contains 22 as substring.

It is an Ulam number.

979873 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (979883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489936 + 489937.

It is an arithmetic number, because the mean of its divisors is an integer number (489937).

2⁹⁷⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

979873 is a deficient number, since it is larger than the sum of its proper divisors (1).

979873 is an equidigital number, since it uses as much as digits as its factorization.

979873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 43.

The square root of 979873 is about 989.8853468963. The cubic root of 979873 is about 99.3245479170.

The spelling of 979873 in words is "nine hundred seventy-nine thousand, eight hundred seventy-three".