249348689 has 4 divisors (see below), whose sum is σ = 249395124. Its totient is φ = 249302256.

The previous prime is 249348653. The next prime is 249348709. The reversal of 249348689 is 986843942.

249348689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144961600 + 104387089 = 12040^2 + 10217^2 .

It is a cyclic number.

It is not a de Polignac number, because 249348689 - 2⁸ = 249348433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 249348689.

It is not an unprimeable number, because it can be changed into a prime (249348089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13922 + ... + 26315.

It is an arithmetic number, because the mean of its divisors is an integer number (62348781).

Almost surely, 2^249348689 is an apocalyptic number.

It is an amenable number.

249348689 is a deficient number, since it is larger than the sum of its proper divisors (46435).

249348689 is an equidigital number, since it uses as much as digits as its factorization.

249348689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46434.

The product of its digits is 2985984, while the sum is 53.

The square root of 249348689 is about 15790.7786065159. The cubic root of 249348689 is about 629.4129822184.

The spelling of 249348689 in words is "two hundred forty-nine million, three hundred forty-eight thousand, six hundred eighty-nine".