249707 has 4 divisors (see below), whose sum is σ = 253296. Its totient is φ = 246120.

The previous prime is 249703. The next prime is 249721. The reversal of 249707 is 707942.

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

It is a cyclic number.

It is not a de Polignac number, because 249707 - 2² = 249703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249707.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249707.

It is not an unprimeable number, because it can be changed into a prime (249703) 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 in 3 ways as a sum of consecutive naturals, for example, 1688 + ... + 1829.

It is an arithmetic number, because the mean of its divisors is an integer number (63324).

2²⁴⁹⁷⁰⁷ is an apocalyptic number.

249707 is a deficient number, since it is larger than the sum of its proper divisors (3589).

249707 is an equidigital number, since it uses as much as digits as its factorization.

249707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 249707 is about 499.7069141007. The cubic root of 249707 is about 62.9714324162.

The spelling of 249707 in words is "two hundred forty-nine thousand, seven hundred seven".