44399660 has 48 divisors (see below), whose sum is σ = 97929216. Its totient is φ = 16876992.

The previous prime is 44399653. The next prime is 44399681. The reversal of 44399660 is 6699344.

44399660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120797 + ... + 121163.

It is an arithmetic number, because the mean of its divisors is an integer number (2040192).

Almost surely, 2^44399660 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 44399660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48964608).

44399660 is an abundant number, since it is smaller than the sum of its proper divisors (53529556).

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

44399660 is a wasteful number, since it uses less digits than its factorization.

44399660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 44399660 is about 6663.3069867747. The cubic root of 44399660 is about 354.1005066421.

It can be divided in two parts, 44399 and 660, that multiplied together give a triangular number (29303340 = T₇₆₅₅).

The spelling of 44399660 in words is "forty-four million, three hundred ninety-nine thousand, six hundred sixty".