3331999969 has 2 divisors, whose sum is σ = 3331999970. Its totient is φ = 3331999968.

The previous prime is 3331999861. The next prime is 3331999987. The reversal of 3331999969 is 9699991333.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2935472400 + 396527569 = 54180^2 + 19913^2 .

It is an emirp because it is prime and its reverse (9699991333) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3331999969 - 2⁷ = 3331999841 is a prime.

It is a super-2 number, since 2×3331999969² = 22204447586832001922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3331939969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665999984 + 1665999985.

It is an arithmetic number, because the mean of its divisors is an integer number (1665999985).

Almost surely, 2^3331999969 is an apocalyptic number.

It is an amenable number.

3331999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3331999969 is an equidigital number, since it uses as much as digits as its factorization.

3331999969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9565938, while the sum is 61.

The square root of 3331999969 is about 57723.4784901257. The cubic root of 3331999969 is about 1493.6023774470.

The spelling of 3331999969 in words is "three billion, three hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred sixty-nine".