44491590 has 96 divisors (see below), whose sum is σ = 135940896. Its totient is φ = 9953280.

The previous prime is 44491589. The next prime is 44491607. The reversal of 44491590 is 9519444.

It is a happy number.

44491590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 11142 + ... + 14598.

It is an arithmetic number, because the mean of its divisors is an integer number (1416051).

Almost surely, 2^44491590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44491590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67970448).

44491590 is an abundant number, since it is smaller than the sum of its proper divisors (91449306).

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

44491590 is a wasteful number, since it uses less digits than its factorization.

44491590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494 (or 3491 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 44491590 is about 6670.2016461273. The cubic root of 44491590 is about 354.3447278714.

The spelling of 44491590 in words is "forty-four million, four hundred ninety-one thousand, five hundred ninety".