249422805 has 12 divisors (see below), whose sum is σ = 432332940. Its totient is φ = 133025472.

The previous prime is 249422783. The next prime is 249422837. The reversal of 249422805 is 508224942.

It can be written as a sum of positive squares in 2 ways, for example, as 101727396 + 147695409 = 10086^2 + 12153^2 .

It is not a de Polignac number, because 249422805 - 2¹¹ = 249420757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249422805.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2771320 + ... + 2771409.

It is an arithmetic number, because the mean of its divisors is an integer number (36027745).

Almost surely, 2^249422805 is an apocalyptic number.

It is an amenable number.

249422805 is a deficient number, since it is larger than the sum of its proper divisors (182910135).

249422805 is a wasteful number, since it uses less digits than its factorization.

249422805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542740 (or 5542737 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 249422805 is about 15793.1252448652. The cubic root of 249422805 is about 629.4753379387.

The spelling of 249422805 in words is "two hundred forty-nine million, four hundred twenty-two thousand, eight hundred five".