442308943 has 4 divisors (see below), whose sum is σ = 453097008. Its totient is φ = 431520880.

The previous prime is 442308917. The next prime is 442308947. The reversal of 442308943 is 349803244.

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

It is a cyclic number.

It is not a de Polignac number, because 442308943 - 2¹³ = 442300751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442308947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5393971 + ... + 5394052.

It is an arithmetic number, because the mean of its divisors is an integer number (113274252).

Almost surely, 2^442308943 is an apocalyptic number.

442308943 is a deficient number, since it is larger than the sum of its proper divisors (10788065).

442308943 is a wasteful number, since it uses less digits than its factorization.

442308943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788064.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 442308943 is about 21031.1422181488. The cubic root of 442308943 is about 761.9185960486.

The spelling of 442308943 in words is "four hundred forty-two million, three hundred eight thousand, nine hundred forty-three".