249484434947 has 8 divisors (see below), whose sum is σ = 273685314240. Its totient is φ = 225536968360.

The previous prime is 249484434937. The next prime is 249484434971. The reversal of 249484434947 is 749434484942.

249484434947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 249484434947 - 2⁶ = 249484434883 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 249484434947.

It is not an unprimeable number, because it can be changed into a prime (249484434937) 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 7 ways as a sum of consecutive naturals, for example, 63351113 + ... + 63355050.

It is an arithmetic number, because the mean of its divisors is an integer number (34210664280).

Almost surely, 2^249484434947 is an apocalyptic number.

249484434947 is a deficient number, since it is larger than the sum of its proper divisors (24200879293).

249484434947 is a wasteful number, since it uses less digits than its factorization.

249484434947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126706353.

The product of its digits is 111476736, while the sum is 62.

The spelling of 249484434947 in words is "two hundred forty-nine billion, four hundred eighty-four million, four hundred thirty-four thousand, nine hundred forty-seven".