249960855 has 8 divisors (see below), whose sum is σ = 399937392. Its totient is φ = 133312448.

The previous prime is 249960811. The next prime is 249960857. The reversal of 249960855 is 558069942.

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

It is a cyclic number.

It is not a de Polignac number, because 249960855 - 2⁷ = 249960727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249960857) 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, 8332014 + ... + 8332043.

It is an arithmetic number, because the mean of its divisors is an integer number (49992174).

Almost surely, 2^249960855 is an apocalyptic number.

249960855 is a deficient number, since it is larger than the sum of its proper divisors (149976537).

249960855 is a wasteful number, since it uses less digits than its factorization.

249960855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664065.

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 249960855 is about 15810.1503787915. The cubic root of 249960855 is about 629.9276434915.

The spelling of 249960855 in words is "two hundred forty-nine million, nine hundred sixty thousand, eight hundred fifty-five".