442677646 has 4 divisors (see below), whose sum is σ = 664016472. Its totient is φ = 221338822.

The previous prime is 442677611. The next prime is 442677661. The reversal of 442677646 is 646776244.

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

It is a junction number, because it is equal to n+sod(n) for n = 442677596 and 442677605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110669410 + ... + 110669413.

It is an arithmetic number, because the mean of its divisors is an integer number (166004118).

Almost surely, 2^442677646 is an apocalyptic number.

442677646 is a deficient number, since it is larger than the sum of its proper divisors (221338826).

442677646 is a wasteful number, since it uses less digits than its factorization.

442677646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221338825.

The product of its digits is 1354752, while the sum is 46.

The square root of 442677646 is about 21039.9060359119. The cubic root of 442677646 is about 762.1302457376.

The spelling of 442677646 in words is "four hundred forty-two million, six hundred seventy-seven thousand, six hundred forty-six".