249484784 has 40 divisors (see below), whose sum is σ = 500386128. Its totient is φ = 120407040.

The previous prime is 249484783. The next prime is 249484793. The reversal of 249484784 is 487484942.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249484783) 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, 75944 + ... + 79160.

Almost surely, 2^249484784 is an apocalyptic number.

It is an amenable number.

249484784 is an abundant number, since it is smaller than the sum of its proper divisors (250901344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249484784 is a wasteful number, since it uses less digits than its factorization.

249484784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393 (or 3387 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 50.

The square root of 249484784 is about 15795.0873375237. The cubic root of 249484784 is about 629.5274730016.

It can be divided in two parts, 2494 and 84784, that added together give a palindrome (87278).

The spelling of 249484784 in words is "two hundred forty-nine million, four hundred eighty-four thousand, seven hundred eighty-four".