8219897 has 12 divisors (see below), whose sum is σ = 9617040. Its totient is φ = 7005096.

The previous prime is 8219881. The next prime is 8219899. The reversal of 8219897 is 7989128.

It is not a de Polignac number, because 8219897 - 2⁴ = 8219881 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8219899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10754 + ... + 11492.

It is an arithmetic number, because the mean of its divisors is an integer number (801420).

Almost surely, 2^8219897 is an apocalyptic number.

It is an amenable number.

8219897 is a deficient number, since it is larger than the sum of its proper divisors (1397143).

8219897 is a wasteful number, since it uses less digits than its factorization.

8219897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 973 counting only the distinct ones).

The product of its digits is 72576, while the sum is 44.

The square root of 8219897 is about 2867.0362746223. The cubic root of 8219897 is about 201.8159369624.

The spelling of 8219897 in words is "eight million, two hundred nineteen thousand, eight hundred ninety-seven".