999479 has 4 divisors (see below), whose sum is σ = 1076376. Its totient is φ = 922584.

The previous prime is 999451. The next prime is 999491. The reversal of 999479 is 974999.

999479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 999479 - 2¹⁶ = 933943 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 (999499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38429 + ... + 38454.

It is an arithmetic number, because the mean of its divisors is an integer number (269094).

2⁹⁹⁹⁴⁷⁹ is an apocalyptic number.

999479 is a deficient number, since it is larger than the sum of its proper divisors (76897).

999479 is a wasteful number, since it uses less digits than its factorization.

999479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76896.

The product of its digits is 183708, while the sum is 47.

The square root of 999479 is about 999.7394660610. The cubic root of 999479 is about 99.9826303164.

The spelling of 999479 in words is "nine hundred ninety-nine thousand, four hundred seventy-nine".