999693241 has 2 divisors, whose sum is σ = 999693242. Its totient is φ = 999693240.

The previous prime is 999693221. The next prime is 999693271. The reversal of 999693241 is 142396999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998876025 + 817216 = 31605^2 + 904^2 .

It is a cyclic number.

It is not a de Polignac number, because 999693241 - 2⁵ = 999693209 is a prime.

It is a super-2 number, since 2×999693241² = 1998773152202168162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999693221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499846620 + 499846621.

It is an arithmetic number, because the mean of its divisors is an integer number (499846621).

Almost surely, 2^999693241 is an apocalyptic number.

It is an amenable number.

999693241 is a deficient number, since it is larger than the sum of its proper divisors (1).

999693241 is an equidigital number, since it uses as much as digits as its factorization.

999693241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 52.

The square root of 999693241 is about 31617.9259439958. The cubic root of 999693241 is about 999.8977365425.

The spelling of 999693241 in words is "nine hundred ninety-nine million, six hundred ninety-three thousand, two hundred forty-one".