249490908 has 48 divisors (see below), whose sum is σ = 649209120. Its totient is φ = 82857600.

The previous prime is 249490841. The next prime is 249490909. The reversal of 249490908 is 809094942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249490909) 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, 26238 + ... + 34458.

It is an arithmetic number, because the mean of its divisors is an integer number (13525190).

Almost surely, 2^249490908 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 249490908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324604560).

249490908 is an abundant number, since it is smaller than the sum of its proper divisors (399718212).

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

249490908 is a wasteful number, since it uses less digits than its factorization.

249490908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8515 (or 8507 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 249490908 is about 15795.2811940782. The cubic root of 249490908 is about 629.5326238764.

The spelling of 249490908 in words is "two hundred forty-nine million, four hundred ninety thousand, nine hundred eight".