44107821 has 20 divisors (see below), whose sum is σ = 66257664. Its totient is φ = 29241000.

The previous prime is 44107807. The next prime is 44107837. The reversal of 44107821 is 12870144.

It is not a de Polignac number, because 44107821 - 2¹¹ = 44105773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44107801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14046 + ... + 16896.

Almost surely, 2^44107821 is an apocalyptic number.

It is an amenable number.

44107821 is a deficient number, since it is larger than the sum of its proper divisors (22149843).

44107821 is a wasteful number, since it uses less digits than its factorization.

44107821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054 (or 3045 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 44107821 is about 6641.3719215234. The cubic root of 44107821 is about 353.3229662517.

Adding to 44107821 its reverse (12870144), we get a palindrome (56977965).

The spelling of 44107821 in words is "forty-four million, one hundred seven thousand, eight hundred twenty-one".