44478940 has 48 divisors (see below), whose sum is σ = 102551904. Its totient is φ = 16070400.

The previous prime is 44478923. The next prime is 44478949. The reversal of 44478940 is 4987444.

It is a super-2 number, since 2×44478940² = 3956752207047200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44478893 and 44478902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44478949) 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, 39262 + ... + 40378.

It is an arithmetic number, because the mean of its divisors is an integer number (2136498).

Almost surely, 2^44478940 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 44478940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51275952).

44478940 is an abundant number, since it is smaller than the sum of its proper divisors (58072964).

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

44478940 is a wasteful number, since it uses less digits than its factorization.

44478940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 44478940 is about 6669.2533315207. The cubic root of 44478940 is about 354.3111418559.

The spelling of 44478940 in words is "forty-four million, four hundred seventy-eight thousand, nine hundred forty".