444422406 has 16 divisors (see below), whose sum is σ = 890971200. Its totient is φ = 147786408.

The previous prime is 444422389. The next prime is 444422423. The reversal of 444422406 is 604224444.

It is an interprime number because it is at equal distance from previous prime (444422389) and next prime (444422423).

It is a super-3 number, since 3×444422406³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85876 + ... + 90903.

It is an arithmetic number, because the mean of its divisors is an integer number (55685700).

Almost surely, 2^444422406 is an apocalyptic number.

444422406 is an abundant number, since it is smaller than the sum of its proper divisors (446548794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444422406 is a wasteful number, since it uses less digits than its factorization.

444422406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177203.

The product of its (nonzero) digits is 24576, while the sum is 30.

The square root of 444422406 is about 21081.3283737055. The cubic root of 444422406 is about 763.1302142998.

The spelling of 444422406 in words is "four hundred forty-four million, four hundred twenty-two thousand, four hundred six".