444210302421 has 8 divisors (see below), whose sum is σ = 658089336960. Its totient is φ = 296140201596.

The previous prime is 444210302401. The next prime is 444210302423. The reversal of 444210302421 is 124203012444.

444210302421 is a `hidden beast` number, since 444 + 210 + 3 + 0 + 2 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 444210302421 - 2²¹ = 444208205269 is a prime.

It is a super-2 number, since 2×444210302421² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16452233423 = 444210302421 / (4 + 4 + 4 + 2 + 1 + 0 + 3 + 0 + 2 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444210302423) 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, 8226116685 + ... + 8226116738.

It is an arithmetic number, because the mean of its divisors is an integer number (82261167120).

Almost surely, 2^444210302421 is an apocalyptic number.

It is an amenable number.

444210302421 is a deficient number, since it is larger than the sum of its proper divisors (213879034539).

444210302421 is a wasteful number, since it uses less digits than its factorization.

444210302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16452233432 (or 16452233426 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 444210302421 its reverse (124203012444), we get a palindrome (568413314865).

The spelling of 444210302421 in words is "four hundred forty-four billion, two hundred ten million, three hundred two thousand, four hundred twenty-one".