249937 has 4 divisors (see below), whose sum is σ = 252340. Its totient is φ = 247536.

The previous prime is 249923. The next prime is 249943. The reversal of 249937 is 739942.

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 123201 + 126736 = 351^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 249937 - 2¹¹ = 247889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (249947) 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, 1038 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (63085).

2²⁴⁹⁹³⁷ is an apocalyptic number.

It is an amenable number.

249937 is a deficient number, since it is larger than the sum of its proper divisors (2403).

249937 is a wasteful number, since it uses less digits than its factorization.

249937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402.

The product of its digits is 13608, while the sum is 34.

The square root of 249937 is about 499.9369960305. The cubic root of 249937 is about 62.9907603818.

The spelling of 249937 in words is "two hundred forty-nine thousand, nine hundred thirty-seven".