999974113 has 2 divisors, whose sum is σ = 999974114. Its totient is φ = 999974112.

The previous prime is 999974111. The next prime is 999974137. The reversal of 999974113 is 311479999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949379344 + 50594769 = 30812^2 + 7113^2 .

It is an emirp because it is prime and its reverse (311479999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999974113 - 2¹ = 999974111 is a prime.

Together with 999974111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999974111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499987056 + 499987057.

It is an arithmetic number, because the mean of its divisors is an integer number (499987057).

Almost surely, 2^999974113 is an apocalyptic number.

It is an amenable number.

999974113 is a deficient number, since it is larger than the sum of its proper divisors (1).

999974113 is an equidigital number, since it uses as much as digits as its factorization.

999974113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 52.

The square root of 999974113 is about 31622.3672896259. The cubic root of 999974113 is about 999.9913709255.

The spelling of 999974113 in words is "nine hundred ninety-nine million, nine hundred seventy-four thousand, one hundred thirteen".