249698629 has 2 divisors, whose sum is σ = 249698630. Its totient is φ = 249698628.

The previous prime is 249698621. The next prime is 249698641. The reversal of 249698629 is 926896942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240560100 + 9138529 = 15510^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 249698629 - 2³ = 249698621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249698629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249698621) 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, 124849314 + 124849315.

It is an arithmetic number, because the mean of its divisors is an integer number (124849315).

Almost surely, 2^249698629 is an apocalyptic number.

It is an amenable number.

249698629 is a deficient number, since it is larger than the sum of its proper divisors (1).

249698629 is an equidigital number, since it uses as much as digits as its factorization.

249698629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 55.

The square root of 249698629 is about 15801.8552391800. The cubic root of 249698629 is about 629.7072873844.

The spelling of 249698629 in words is "two hundred forty-nine million, six hundred ninety-eight thousand, six hundred twenty-nine".