44509140 has 144 divisors (see below), whose sum is σ = 151901568. Its totient is φ = 10467072.

The previous prime is 44509123. The next prime is 44509147. The reversal of 44509140 is 4190544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44509147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53407 + ... + 54233.

It is an arithmetic number, because the mean of its divisors is an integer number (1054872).

Almost surely, 2^44509140 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 44509140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75950784).

44509140 is an abundant number, since it is smaller than the sum of its proper divisors (107392428).

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

44509140 is a wasteful number, since it uses less digits than its factorization.

44509140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 44509140 is about 6671.5170688532. The cubic root of 44509140 is about 354.3913129487.

Adding to 44509140 its reverse (4190544), we get a palindrome (48699684).

The spelling of 44509140 in words is "forty-four million, five hundred nine thousand, one hundred forty".