249400885 has 8 divisors (see below), whose sum is σ = 299370456. Its totient is φ = 199461120.

The previous prime is 249400793. The next prime is 249400913. The reversal of 249400885 is 588004942.

It can be written as a sum of positive squares in 4 ways, for example, as 51351556 + 198049329 = 7166^2 + 14073^2 .

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

It is not a de Polignac number, because 249400885 - 2¹⁹ = 248876597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20497 + ... + 30313.

It is an arithmetic number, because the mean of its divisors is an integer number (37421307).

Almost surely, 2^249400885 is an apocalyptic number.

It is an amenable number.

249400885 is a deficient number, since it is larger than the sum of its proper divisors (49969571).

249400885 is an equidigital number, since it uses as much as digits as its factorization.

249400885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14903.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 249400885 is about 15792.4312567761. The cubic root of 249400885 is about 629.4568973586.

The spelling of 249400885 in words is "two hundred forty-nine million, four hundred thousand, eight hundred eighty-five".