9442819 has 4 divisors (see below), whose sum is σ = 9462096. Its totient is φ = 9423544.

The previous prime is 9442813. The next prime is 9442847. The reversal of 9442819 is 9182449.

It is a happy number.

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 9442819 - 2⁷ = 9442691 is a prime.

It is a super-2 number, since 2×9442819² = 178333661333522, which contains 22 as substring.

It is a Duffinian number.

9442819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9442813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8884 + ... + 9889.

It is an arithmetic number, because the mean of its divisors is an integer number (2365524).

Almost surely, 2^9442819 is an apocalyptic number.

9442819 is a deficient number, since it is larger than the sum of its proper divisors (19277).

9442819 is a wasteful number, since it uses less digits than its factorization.

9442819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19276.

The product of its digits is 20736, while the sum is 37.

The square root of 9442819 is about 3072.9170180791. The cubic root of 9442819 is about 211.3653963787.

The spelling of 9442819 in words is "nine million, four hundred forty-two thousand, eight hundred nineteen".