444232221 has 8 divisors (see below), whose sum is σ = 597845664. Its totient is φ = 293386800.

The previous prime is 444232199. The next prime is 444232223. The reversal of 444232221 is 122232444.

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

It is not a de Polignac number, because 444232221 - 2¹⁹ = 443707933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444232191 and 444232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444232223) 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, 691630 + ... + 692271.

It is an arithmetic number, because the mean of its divisors is an integer number (74730708).

Almost surely, 2^444232221 is an apocalyptic number.

It is an amenable number.

444232221 is a deficient number, since it is larger than the sum of its proper divisors (153613443).

444232221 is a wasteful number, since it uses less digits than its factorization.

444232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384011.

The product of its digits is 3072, while the sum is 24.

The square root of 444232221 is about 21076.8171458596. The cubic root of 444232221 is about 763.0213414303.

Adding to 444232221 its reverse (122232444), we get a palindrome (566464665).

It can be divided in two parts, 4442 and 32221, that added together give a palindrome (36663).

The spelling of 444232221 in words is "four hundred forty-four million, two hundred thirty-two thousand, two hundred twenty-one".