8442919 has 8 divisors (see below), whose sum is σ = 8727840. Its totient is φ = 8161056.

The previous prime is 8442901. The next prime is 8442923. The reversal of 8442919 is 9192448.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8442919 - 2¹⁵ = 8410151 is a prime.

It is a super-2 number, since 2×8442919² = 142565762481122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

8442919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5742 + ... + 7060.

It is an arithmetic number, because the mean of its divisors is an integer number (1090980).

Almost surely, 2^8442919 is an apocalyptic number.

8442919 is a deficient number, since it is larger than the sum of its proper divisors (284921).

8442919 is a wasteful number, since it uses less digits than its factorization.

8442919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

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

The square root of 8442919 is about 2905.6701464550. The cubic root of 8442919 is about 203.6248954109.

It can be divided in two parts, 84429 and 19, that added together give a palindrome (84448).

The spelling of 8442919 in words is "eight million, four hundred forty-two thousand, nine hundred nineteen".