979399 has 4 divisors (see below), whose sum is σ = 982264. Its totient is φ = 976536.

The previous prime is 979379. The next prime is 979403. The reversal of 979399 is 993979.

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

It is a cyclic number.

It is not a de Polignac number, because 979399 - 2¹¹ = 977351 is a prime.

It is an Ulam number.

It is a Duffinian number.

979399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979369) 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, 837 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (245566).

2⁹⁷⁹³⁹⁹ is an apocalyptic number.

979399 is a deficient number, since it is larger than the sum of its proper divisors (2865).

979399 is a wasteful number, since it uses less digits than its factorization.

979399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864.

The product of its digits is 137781, while the sum is 46.

The square root of 979399 is about 989.6458962680. The cubic root of 979399 is about 99.3085297088.

It can be divided in two parts, 979 and 399, that added together give a triangular number (1378 = T₅₂).

The spelling of 979399 in words is "nine hundred seventy-nine thousand, three hundred ninety-nine".