249953743 has 8 divisors (see below), whose sum is σ = 270795168. Its totient is φ = 229342944.

The previous prime is 249953707. The next prime is 249953747. The reversal of 249953743 is 347359942.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249953743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 249953693 and 249953702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249953747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55396 + ... + 59737.

It is an arithmetic number, because the mean of its divisors is an integer number (33849396).

Almost surely, 2^249953743 is an apocalyptic number.

249953743 is a deficient number, since it is larger than the sum of its proper divisors (20841425).

249953743 is a wasteful number, since it uses less digits than its factorization.

249953743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115313.

The product of its digits is 816480, while the sum is 46.

The square root of 249953743 is about 15809.9254583948. The cubic root of 249953743 is about 629.9216691055.

The spelling of 249953743 in words is "two hundred forty-nine million, nine hundred fifty-three thousand, seven hundred forty-three".