249049 has 4 divisors (see below), whose sum is σ = 250240. Its totient is φ = 247860.

The previous prime is 249037. The next prime is 249059. The reversal of 249049 is 940942.

249049 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 940942 = 2 ⋅470471.

It is a cyclic number.

It is not a de Polignac number, because 249049 - 2⁵ = 249017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189 + ... + 730.

It is an arithmetic number, because the mean of its divisors is an integer number (62560).

2²⁴⁹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

249049 is a deficient number, since it is larger than the sum of its proper divisors (1191).

249049 is an equidigital number, since it uses as much as digits as its factorization.

249049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 249049 is about 499.0480938747. The cubic root of 249049 is about 62.9160719990.

The spelling of 249049 in words is "two hundred forty-nine thousand, forty-nine".