999993213 has 12 divisors (see below), whose sum is σ = 1461838560. Its totient is φ = 658629576.

The previous prime is 999993179. The next prime is 999993221. The reversal of 999993213 is 312399999.

It is not a de Polignac number, because 999993213 - 2¹⁴ = 999976829 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 999993213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999993913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668593 + ... + 670086.

It is an arithmetic number, because the mean of its divisors is an integer number (121819880).

Almost surely, 2^999993213 is an apocalyptic number.

It is an amenable number.

999993213 is a deficient number, since it is larger than the sum of its proper divisors (461845347).

999993213 is a wasteful number, since it uses less digits than its factorization.

999993213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338768 (or 1338765 counting only the distinct ones).

The product of its digits is 1062882, while the sum is 54.

The square root of 999993213 is about 31622.6692896093. The cubic root of 999993213 is about 999.9977376615.

The spelling of 999993213 in words is "nine hundred ninety-nine million, nine hundred ninety-three thousand, two hundred thirteen".