44439840 has 192 divisors, whose sum is σ = 158699520. Its totient is φ = 11757312.

The previous prime is 44439839. The next prime is 44439847. The reversal of 44439840 is 4893444.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 44439795 and 44439804.

It is not an unprimeable number, because it can be changed into a prime (44439847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349857 + ... + 349983.

It is an arithmetic number, because the mean of its divisors is an integer number (826560).

Almost surely, 2^44439840 is an apocalyptic number.

44439840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44439840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79349760).

44439840 is an abundant number, since it is smaller than the sum of its proper divisors (114259680).

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

44439840 is an equidigital number, since it uses as much as digits as its factorization.

44439840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 44439840 is about 6666.3213243887. The cubic root of 44439840 is about 354.2072902576.

The spelling of 44439840 in words is "forty-four million, four hundred thirty-nine thousand, eight hundred forty".