44399740 has 72 divisors (see below), whose sum is σ = 117171936. Its totient is φ = 13833600.

The previous prime is 44399737. The next prime is 44399749. The reversal of 44399740 is 4799344.

It is a junction number, because it is equal to n+sod(n) for n = 44399693 and 44399702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44399749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15630 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (1627388).

Almost surely, 2^44399740 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 44399740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58585968).

44399740 is an abundant number, since it is smaller than the sum of its proper divisors (72772196).

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

44399740 is a wasteful number, since it uses less digits than its factorization.

44399740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659 (or 2646 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 44399740 is about 6663.3129897972. The cubic root of 44399740 is about 354.1007193166.

The spelling of 44399740 in words is "forty-four million, three hundred ninety-nine thousand, seven hundred forty".