999348939 has 24 divisors (see below), whose sum is σ = 1480839360. Its totient is φ = 649080432.

The previous prime is 999348937. The next prime is 999348949. The reversal of 999348939 is 939843999.

It is not a de Polignac number, because 999348939 - 2¹ = 999348937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999348937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159072 + ... + 165234.

It is an arithmetic number, because the mean of its divisors is an integer number (61701640).

Almost surely, 2^999348939 is an apocalyptic number.

999348939 is a deficient number, since it is larger than the sum of its proper divisors (481490421).

999348939 is a wasteful number, since it uses less digits than its factorization.

999348939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631 (or 6628 counting only the distinct ones).

The product of its digits is 17006112, while the sum is 63.

The square root of 999348939 is about 31612.4807473251. The cubic root of 999348939 is about 999.7829325518.

The spelling of 999348939 in words is "nine hundred ninety-nine million, three hundred forty-eight thousand, nine hundred thirty-nine".