442776894 has 16 divisors (see below), whose sum is σ = 1012061568. Its totient is φ = 126507672.

The previous prime is 442776889. The next prime is 442776913. The reversal of 442776894 is 498677244.

It is a happy number.

It is a Curzon number.

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, 5271112 + ... + 5271195.

It is an arithmetic number, because the mean of its divisors is an integer number (63253848).

Almost surely, 2^442776894 is an apocalyptic number.

442776894 is an abundant number, since it is smaller than the sum of its proper divisors (569284674).

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

442776894 is a wasteful number, since it uses less digits than its factorization.

442776894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542319.

The product of its digits is 2709504, while the sum is 51.

The square root of 442776894 is about 21042.2644693959. The cubic root of 442776894 is about 762.1871978269.

The spelling of 442776894 in words is "four hundred forty-two million, seven hundred seventy-six thousand, eight hundred ninety-four".