44400321 has 48 divisors (see below), whose sum is σ = 78832000. Its totient is φ = 24004512.

The previous prime is 44400319. The next prime is 44400329. The reversal of 44400321 is 12300444.

It is not a de Polignac number, because 44400321 - 2¹ = 44400319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 44400294 and 44400303.

It is not an unprimeable number, because it can be changed into a prime (44400329) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58275 + ... + 59031.

Almost surely, 2^44400321 is an apocalyptic number.

It is an amenable number.

44400321 is a deficient number, since it is larger than the sum of its proper divisors (34431679).

44400321 is a wasteful number, since it uses less digits than its factorization.

44400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 44400321 is about 6663.3565865861. The cubic root of 44400321 is about 354.1022638574.

Adding to 44400321 its reverse (12300444), we get a palindrome (56700765).

The spelling of 44400321 in words is "forty-four million, four hundred thousand, three hundred twenty-one".