442774386 has 24 divisors (see below), whose sum is σ = 960030864. Its totient is φ = 147485880.

The previous prime is 442774379. The next prime is 442774393. The reversal of 442774386 is 683477244.

It is an interprime number because it is at equal distance from previous prime (442774379) and next prime (442774393).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19525 + ... + 35591.

It is an arithmetic number, because the mean of its divisors is an integer number (40001286).

Almost surely, 2^442774386 is an apocalyptic number.

442774386 is an abundant number, since it is smaller than the sum of its proper divisors (517256478).

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

442774386 is a wasteful number, since it uses less digits than its factorization.

442774386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17606 (or 17603 counting only the distinct ones).

The product of its digits is 903168, while the sum is 45.

The square root of 442774386 is about 21042.2048749650. The cubic root of 442774386 is about 762.1857587507.

The spelling of 442774386 in words is "four hundred forty-two million, seven hundred seventy-four thousand, three hundred eighty-six".