249999876 has 72 divisors (see below), whose sum is σ = 727831104. Its totient is φ = 70873920.

The previous prime is 249999859. The next prime is 249999877. The reversal of 249999876 is 678999942.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (249999877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29226 + ... + 36798.

Almost surely, 2^249999876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249999876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363915552).

249999876 is an abundant number, since it is smaller than the sum of its proper divisors (477831228).

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

249999876 is a wasteful number, since it uses less digits than its factorization.

249999876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721 (or 7716 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 249999876 is about 15811.3843796171. The cubic root of 249999876 is about 629.9604207939.

The spelling of 249999876 in words is "two hundred forty-nine million, nine hundred ninety-nine thousand, eight hundred seventy-six".