249999912 has 64 divisors (see below), whose sum is σ = 695832000. Its totient is φ = 83166912.

The previous prime is 249999889. The next prime is 249999917. The reversal of 249999912 is 219999942.

249999912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (249999917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157539 + ... + 159117.

It is an arithmetic number, because the mean of its divisors is an integer number (10872375).

Almost surely, 2^249999912 is an apocalyptic number.

It is an amenable number.

249999912 is an abundant number, since it is smaller than the sum of its proper divisors (445832088).

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

249999912 is a wasteful number, since it uses less digits than its factorization.

249999912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327 (or 2317 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 249999912 is about 15811.3855180373. The cubic root of 249999912 is about 629.9604510321.

The spelling of 249999912 in words is "two hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred twelve".