249983895 has 64 divisors (see below), whose sum is σ = 505128960. Its totient is φ = 102862848.

The previous prime is 249983869. The next prime is 249983927. The reversal of 249983895 is 598389942.

It is not a de Polignac number, because 249983895 - 2⁵ = 249983863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38011 + ... + 44099.

It is an arithmetic number, because the mean of its divisors is an integer number (7892640).

Almost surely, 2^249983895 is an apocalyptic number.

249983895 is an abundant number, since it is smaller than the sum of its proper divisors (255145065).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249983895 is a wasteful number, since it uses less digits than its factorization.

249983895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6144.

The product of its digits is 5598720, while the sum is 57.

The square root of 249983895 is about 15810.8790078224. The cubic root of 249983895 is about 629.9469973046.

The spelling of 249983895 in words is "two hundred forty-nine million, nine hundred eighty-three thousand, eight hundred ninety-five".