8219442 has 32 divisors (see below), whose sum is σ = 20496384. Its totient is φ = 2134800.

The previous prime is 8219429. The next prime is 8219447. The reversal of 8219442 is 2449128.

It is not an unprimeable number, because it can be changed into a prime (8219447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8434 + ... + 9357.

It is an arithmetic number, because the mean of its divisors is an integer number (640512).

Almost surely, 2^8219442 is an apocalyptic number.

8219442 is an abundant number, since it is smaller than the sum of its proper divisors (12276942).

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

8219442 is a wasteful number, since it uses less digits than its factorization.

8219442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17814.

The product of its digits is 4608, while the sum is 30.

The square root of 8219442 is about 2866.9569232899. The cubic root of 8219442 is about 201.8122131547.

The spelling of 8219442 in words is "eight million, two hundred nineteen thousand, four hundred forty-two".