44391961 has 8 divisors (see below), whose sum is σ = 47098880. Its totient is φ = 41722128.

The previous prime is 44391931. The next prime is 44391979. The reversal of 44391961 is 16919344.

44391961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44391961 - 2⁵ = 44391929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44391961.

It is not an unprimeable number, because it can be changed into a prime (44391911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6786 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (5887360).

Almost surely, 2^44391961 is an apocalyptic number.

It is an amenable number.

44391961 is a deficient number, since it is larger than the sum of its proper divisors (2706919).

44391961 is a wasteful number, since it uses less digits than its factorization.

44391961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18543.

The product of its digits is 23328, while the sum is 37.

The square root of 44391961 is about 6662.7292455870. The cubic root of 44391961 is about 354.0800381867.

It can be divided in two parts, 4439 and 1961, that added together give a square (6400 = 80²).

The spelling of 44391961 in words is "forty-four million, three hundred ninety-one thousand, nine hundred sixty-one".