249070669 has 2 divisors, whose sum is σ = 249070670. Its totient is φ = 249070668.

The previous prime is 249070667. The next prime is 249070697. The reversal of 249070669 is 966070942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191462569 + 57608100 = 13837^2 + 7590^2 .

It is a cyclic number.

It is not a de Polignac number, because 249070669 - 2¹ = 249070667 is a prime.

It is a super-2 number, since 2×249070669² = 124072396312215122, which contains 22 as substring.

Together with 249070667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249070667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124535334 + 124535335.

It is an arithmetic number, because the mean of its divisors is an integer number (124535335).

Almost surely, 2^249070669 is an apocalyptic number.

It is an amenable number.

249070669 is a deficient number, since it is larger than the sum of its proper divisors (1).

249070669 is an equidigital number, since it uses as much as digits as its factorization.

249070669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 249070669 is about 15781.9729121552. The cubic root of 249070669 is about 629.1789665846.

The spelling of 249070669 in words is "two hundred forty-nine million, seventy thousand, six hundred sixty-nine".