249639324 has 96 divisors (see below), whose sum is σ = 657054720. Its totient is φ = 73113600.

The previous prime is 249639317. The next prime is 249639353. The reversal of 249639324 is 423936942.

249639324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1044397 + ... + 1044635.

It is an arithmetic number, because the mean of its divisors is an integer number (6844320).

Almost surely, 2^249639324 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 249639324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328527360).

249639324 is an abundant number, since it is smaller than the sum of its proper divisors (407415396).

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

249639324 is a wasteful number, since it uses less digits than its factorization.

249639324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 489 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 249639324 is about 15799.9786075805. The cubic root of 249639324 is about 629.6574302857.

The spelling of 249639324 in words is "two hundred forty-nine million, six hundred thirty-nine thousand, three hundred twenty-four".