442006444406 has 32 divisors (see below), whose sum is σ = 703550361600. Its totient is φ = 207684069120.

The previous prime is 442006444223. The next prime is 442006444421. The reversal of 442006444406 is 604444600244.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 442006444406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2475815 + ... + 2648333.

It is an arithmetic number, because the mean of its divisors is an integer number (21985948800).

Almost surely, 2^442006444406 is an apocalyptic number.

442006444406 is a deficient number, since it is larger than the sum of its proper divisors (261543917194).

442006444406 is a wasteful number, since it uses less digits than its factorization.

442006444406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173084.

The product of its (nonzero) digits is 294912, while the sum is 38.

The spelling of 442006444406 in words is "four hundred forty-two billion, six million, four hundred forty-four thousand, four hundred six".