363998669 has 2 divisors, whose sum is σ = 363998670. Its totient is φ = 363998668.

The previous prime is 363998653. The next prime is 363998707. The reversal of 363998669 is 966899363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362140900 + 1857769 = 19030^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 363998669 - 2⁴ = 363998653 is a prime.

It is a super-2 number, since 2×363998669² = 264990062067543122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (363998629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181999334 + 181999335.

It is an arithmetic number, because the mean of its divisors is an integer number (181999335).

Almost surely, 2^363998669 is an apocalyptic number.

It is an amenable number.

363998669 is a deficient number, since it is larger than the sum of its proper divisors (1).

363998669 is an equidigital number, since it uses as much as digits as its factorization.

363998669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11337408, while the sum is 59.

The square root of 363998669 is about 19078.7491466291. The cubic root of 363998669 is about 714.0028279174.

The spelling of 363998669 in words is "three hundred sixty-three million, nine hundred ninety-eight thousand, six hundred sixty-nine".