249449659247 has 8 divisors (see below), whose sum is σ = 249705360000. Its totient is φ = 249194050560.

The previous prime is 249449659243. The next prime is 249449659259. The reversal of 249449659247 is 742956944942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249449659247 - 2² = 249449659243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249449659243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6253847 + ... + 6293607.

It is an arithmetic number, because the mean of its divisors is an integer number (31213170000).

Almost surely, 2^249449659247 is an apocalyptic number.

249449659247 is a deficient number, since it is larger than the sum of its proper divisors (255700753).

249449659247 is a wasteful number, since it uses less digits than its factorization.

249449659247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46033.

The product of its digits is 156764160, while the sum is 65.

The spelling of 249449659247 in words is "two hundred forty-nine billion, four hundred forty-nine million, six hundred fifty-nine thousand, two hundred forty-seven".