249284855 has 16 divisors (see below), whose sum is σ = 319710240. Its totient is φ = 185935872.

The previous prime is 249284839. The next prime is 249284881. The reversal of 249284855 is 558482942.

It is a cyclic number.

It is not a de Polignac number, because 249284855 - 2⁴ = 249284839 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 4610 + ... + 22799.

It is an arithmetic number, because the mean of its divisors is an integer number (19981890).

Almost surely, 2^249284855 is an apocalyptic number.

249284855 is a deficient number, since it is larger than the sum of its proper divisors (70425385).

249284855 is a wasteful number, since it uses less digits than its factorization.

249284855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27538.

The product of its digits is 921600, while the sum is 47.

The square root of 249284855 is about 15788.7572341841. The cubic root of 249284855 is about 629.3592671076.

The spelling of 249284855 in words is "two hundred forty-nine million, two hundred eighty-four thousand, eight hundred fifty-five".