44309140 has 60 divisors (see below), whose sum is σ = 103996116. Its totient is φ = 15803136.

The previous prime is 44309131. The next prime is 44309143. The reversal of 44309140 is 4190344.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25542916 + 18766224 = 5054^2 + 4332^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44309143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2332051 + ... + 2332069.

Almost surely, 2^44309140 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 44309140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51998058).

44309140 is an abundant number, since it is smaller than the sum of its proper divisors (59686976).

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

44309140 is an equidigital number, since it uses as much as digits as its factorization.

44309140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 43 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 44309140 is about 6656.5110981655. The cubic root of 44309140 is about 353.8597016043.

Adding to 44309140 its reverse (4190344), we get a palindrome (48499484).

The spelling of 44309140 in words is "forty-four million, three hundred nine thousand, one hundred forty".