249545448 has 128 divisors (see below), whose sum is σ = 743904000. Its totient is φ = 78195456.

The previous prime is 249545441. The next prime is 249545473. The reversal of 249545448 is 844545942.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (249545441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297013 + ... + 297851.

It is an arithmetic number, because the mean of its divisors is an integer number (5811750).

Almost surely, 2^249545448 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 249545448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371952000).

249545448 is an abundant number, since it is smaller than the sum of its proper divisors (494358552).

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

249545448 is an equidigital number, since it uses as much as digits as its factorization.

249545448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 861 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 249545448 is about 15797.0075647257. The cubic root of 249545448 is about 629.5784935609.

The spelling of 249545448 in words is "two hundred forty-nine million, five hundred forty-five thousand, four hundred forty-eight".