444546421 has 8 divisors (see below), whose sum is σ = 491603904. Its totient is φ = 398596320.

The previous prime is 444546391. The next prime is 444546437. The reversal of 444546421 is 124645444.

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 444546421 - 2²¹ = 442449269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444546451) 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, 276001 + ... + 277606.

It is an arithmetic number, because the mean of its divisors is an integer number (61450488).

Almost surely, 2^444546421 is an apocalyptic number.

It is an amenable number.

444546421 is a deficient number, since it is larger than the sum of its proper divisors (47057483).

444546421 is a wasteful number, since it uses less digits than its factorization.

444546421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553691.

The product of its digits is 61440, while the sum is 34.

The square root of 444546421 is about 21084.2695154468. The cubic root of 444546421 is about 763.2011909132.

The spelling of 444546421 in words is "four hundred forty-four million, five hundred forty-six thousand, four hundred twenty-one".