44381821 has 8 divisors (see below), whose sum is σ = 48543264. Its totient is φ = 40241520.

The previous prime is 44381819. The next prime is 44381867. The reversal of 44381821 is 12818344.

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

It is not a de Polignac number, because 44381821 - 2¹ = 44381819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44981821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (6067908).

Almost surely, 2^44381821 is an apocalyptic number.

It is an amenable number.

44381821 is a deficient number, since it is larger than the sum of its proper divisors (4161443).

44381821 is a wasteful number, since it uses less digits than its factorization.

44381821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571.

The product of its digits is 6144, while the sum is 31.

The square root of 44381821 is about 6661.9682527013. The cubic root of 44381821 is about 354.0530765108.

The spelling of 44381821 in words is "forty-four million, three hundred eighty-one thousand, eight hundred twenty-one".