442919739 has 16 divisors (see below), whose sum is σ = 597094400. Its totient is φ = 292027680.

The previous prime is 442919731. The next prime is 442919749. The reversal of 442919739 is 937919244.

It is a happy number.

It is not a de Polignac number, because 442919739 - 2³ = 442919731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442919731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131304 + ... + 134634.

It is an arithmetic number, because the mean of its divisors is an integer number (37318400).

Almost surely, 2^442919739 is an apocalyptic number.

442919739 is a deficient number, since it is larger than the sum of its proper divisors (154174661).

442919739 is a wasteful number, since it uses less digits than its factorization.

442919739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810.

The product of its digits is 489888, while the sum is 48.

The square root of 442919739 is about 21045.6584358865. The cubic root of 442919739 is about 762.2691525132.

The spelling of 442919739 in words is "four hundred forty-two million, nine hundred nineteen thousand, seven hundred thirty-nine".