999859373 has 2 divisors, whose sum is σ = 999859374. Its totient is φ = 999859372.

The previous prime is 999859321. The next prime is 999859379. The reversal of 999859373 is 373958999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 757185289 + 242674084 = 27517^2 + 15578^2 .

It is a cyclic number.

It is not a de Polignac number, because 999859373 - 2⁶ = 999859309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999859379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499929686 + 499929687.

It is an arithmetic number, because the mean of its divisors is an integer number (499929687).

Almost surely, 2^999859373 is an apocalyptic number.

It is an amenable number.

999859373 is a deficient number, since it is larger than the sum of its proper divisors (1).

999859373 is an equidigital number, since it uses as much as digits as its factorization.

999859373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16533720, while the sum is 62.

The square root of 999859373 is about 31620.5530154044. The cubic root of 999859373 is about 999.9531221358.

The spelling of 999859373 in words is "nine hundred ninety-nine million, eight hundred fifty-nine thousand, three hundred seventy-three".