249334247 has 4 divisors (see below), whose sum is σ = 249366456. Its totient is φ = 249302040.

The previous prime is 249334229. The next prime is 249334273. The reversal of 249334247 is 742433942.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 249334247 - 2⁸ = 249333991 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 249334247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249334847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3308 + ... + 22574.

It is an arithmetic number, because the mean of its divisors is an integer number (62341614).

Almost surely, 2^249334247 is an apocalyptic number.

249334247 is a deficient number, since it is larger than the sum of its proper divisors (32209).

249334247 is a wasteful number, since it uses less digits than its factorization.

249334247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32208.

The product of its digits is 145152, while the sum is 38.

The square root of 249334247 is about 15790.3213076872. The cubic root of 249334247 is about 629.4008303494.

The spelling of 249334247 in words is "two hundred forty-nine million, three hundred thirty-four thousand, two hundred forty-seven".