999279 has 6 divisors (see below), whose sum is σ = 1443416. Its totient is φ = 666180.

The previous prime is 999269. The next prime is 999287. The reversal of 999279 is 972999.

It is not a de Polignac number, because 999279 - 2⁸ = 999023 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 (999239) 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, 55507 + ... + 55524.

2⁹⁹⁹²⁷⁹ is an apocalyptic number.

999279 is a deficient number, since it is larger than the sum of its proper divisors (444137).

999279 is a wasteful number, since it uses less digits than its factorization.

999279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111037 (or 111034 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 999279 is about 999.6394349964. The cubic root of 999279 is about 99.9759608883.

The spelling of 999279 in words is "nine hundred ninety-nine thousand, two hundred seventy-nine".