44779821 has 8 divisors (see below), whose sum is σ = 60264864. Its totient is φ = 29574000.

The previous prime is 44779811. The next prime is 44779829. The reversal of 44779821 is 12897744.

It is a happy number.

44779821 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 not a de Polignac number, because 44779821 - 2¹¹ = 44777773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44779829) 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, 69430 + ... + 70071.

It is an arithmetic number, because the mean of its divisors is an integer number (7533108).

Almost surely, 2^44779821 is an apocalyptic number.

It is an amenable number.

44779821 is a deficient number, since it is larger than the sum of its proper divisors (15485043).

44779821 is a wasteful number, since it uses less digits than its factorization.

44779821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139611.

The product of its digits is 112896, while the sum is 42.

The square root of 44779821 is about 6691.7726351095. The cubic root of 44779821 is about 355.1082682399.

The spelling of 44779821 in words is "forty-four million, seven hundred seventy-nine thousand, eight hundred twenty-one".