999734375 has 28 divisors (see below), whose sum is σ = 1263265080. Its totient is φ = 791100000.

The previous prime is 999734363. The next prime is 999734383. The reversal of 999734375 is 573437999.

It is not a de Polignac number, because 999734375 - 2²² = 995540071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999734375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1702832 + ... + 1703418.

It is an arithmetic number, because the mean of its divisors is an integer number (45116610).

Almost surely, 2^999734375 is an apocalyptic number.

999734375 is a deficient number, since it is larger than the sum of its proper divisors (263530705).

999734375 is an frugal number, since it uses more digits than its factorization.

999734375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 701 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 56.

The square root of 999734375 is about 31618.5764227297. The cubic root of 999734375 is about 999.9114504925.

The spelling of 999734375 in words is "nine hundred ninety-nine million, seven hundred thirty-four thousand, three hundred seventy-five".