444021307 has 8 divisors (see below), whose sum is σ = 447628752. Its totient is φ = 440428800.

The previous prime is 444021299. The next prime is 444021313. The reversal of 444021307 is 703120444.

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

It is a cyclic number.

It is not a de Polignac number, because 444021307 - 2³ = 444021299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444021377) 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, 60307 + ... + 67267.

It is an arithmetic number, because the mean of its divisors is an integer number (55953594).

Almost surely, 2^444021307 is an apocalyptic number.

444021307 is a deficient number, since it is larger than the sum of its proper divisors (3607445).

444021307 is a wasteful number, since it uses less digits than its factorization.

444021307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7469.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 444021307 is about 21071.8130923753. The cubic root of 444021307 is about 762.9005657402.

The spelling of 444021307 in words is "four hundred forty-four million, twenty-one thousand, three hundred seven".