444617346406 has 16 divisors (see below), whose sum is σ = 685026763344. Its totient is φ = 216276420384.

The previous prime is 444617346403. The next prime is 444617346409. The reversal of 444617346406 is 604643716444.

It is an interprime number because it is at equal distance from previous prime (444617346403) and next prime (444617346409).

It is a super-2 number, since 2×444617346406² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444617346406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444617346403) 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, 351301 + ... + 1006303.

It is an arithmetic number, because the mean of its divisors is an integer number (42814172709).

Almost surely, 2^444617346406 is an apocalyptic number.

444617346406 is a deficient number, since it is larger than the sum of its proper divisors (240409416938).

444617346406 is a wasteful number, since it uses less digits than its factorization.

444617346406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664215.

The product of its (nonzero) digits is 4644864, while the sum is 49.

The spelling of 444617346406 in words is "four hundred forty-four billion, six hundred seventeen million, three hundred forty-six thousand, four hundred six".