249740793 has 16 divisors (see below), whose sum is σ = 371048640. Its totient is φ = 166015872.

The previous prime is 249740791. The next prime is 249740797. The reversal of 249740793 is 397047942.

It is not a de Polignac number, because 249740793 - 2¹ = 249740791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249740791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3571 + ... + 22632.

It is an arithmetic number, because the mean of its divisors is an integer number (23190540).

Almost surely, 2^249740793 is an apocalyptic number.

It is an amenable number.

249740793 is a deficient number, since it is larger than the sum of its proper divisors (121307847).

249740793 is a wasteful number, since it uses less digits than its factorization.

249740793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26565 (or 26559 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 249740793 is about 15803.1893300055. The cubic root of 249740793 is about 629.7427294209.

The spelling of 249740793 in words is "two hundred forty-nine million, seven hundred forty thousand, seven hundred ninety-three".