249989000 has 32 divisors (see below), whose sum is σ = 584976600. Its totient is φ = 99995200.

The previous prime is 249988987. The next prime is 249989009. The reversal of 249989000 is 989942.

249989000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45670564 + 204318436 = 6758^2 + 14294^2 .

It is not an unprimeable number, because it can be changed into a prime (249989009) 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, 123995 + ... + 125994.

Almost surely, 2^249989000 is an apocalyptic number.

249989000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249989000 is an abundant number, since it is smaller than the sum of its proper divisors (334987600).

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

249989000 is a wasteful number, since it uses less digits than its factorization.

249989000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250010 (or 249996 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 249989000 is about 15811.0404464728. The cubic root of 249989000 is about 629.9512853909.

The spelling of 249989000 in words is "two hundred forty-nine million, nine hundred eighty-nine thousand".