442116406 has 4 divisors (see below), whose sum is σ = 663174612. Its totient is φ = 221058202.

The previous prime is 442116401. The next prime is 442116421. The reversal of 442116406 is 604611244.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442116401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110529100 + ... + 110529103.

It is an arithmetic number, because the mean of its divisors is an integer number (165793653).

Almost surely, 2^442116406 is an apocalyptic number.

442116406 is a deficient number, since it is larger than the sum of its proper divisors (221058206).

442116406 is a wasteful number, since it uses less digits than its factorization.

442116406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221058205.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 442116406 is about 21026.5642937690. The cubic root of 442116406 is about 761.8080256626.

The spelling of 442116406 in words is "four hundred forty-two million, one hundred sixteen thousand, four hundred six".