999311473 has 4 divisors (see below), whose sum is σ = 1009205748. Its totient is φ = 989417200.

The previous prime is 999311471. The next prime is 999311477. The reversal of 999311473 is 374113999.

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

It can be written as a sum of positive squares in 2 ways, for example, as 787812624 + 211498849 = 28068^2 + 14543^2 .

It is a cyclic number.

It is not a de Polignac number, because 999311473 - 2¹ = 999311471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999311471) 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, 4946986 + ... + 4947187.

It is an arithmetic number, because the mean of its divisors is an integer number (252301437).

Almost surely, 2^999311473 is an apocalyptic number.

It is an amenable number.

999311473 is a deficient number, since it is larger than the sum of its proper divisors (9894275).

999311473 is a wasteful number, since it uses less digits than its factorization.

999311473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9894274.

The product of its digits is 183708, while the sum is 46.

The square root of 999311473 is about 31611.8881593618. Note that the first 3 decimals coincide. The cubic root of 999311473 is about 999.7704383055.

The spelling of 999311473 in words is "nine hundred ninety-nine million, three hundred eleven thousand, four hundred seventy-three".