8219437 has 4 divisors (see below), whose sum is σ = 8231740. Its totient is φ = 8207136.

The previous prime is 8219429. The next prime is 8219447. The reversal of 8219437 is 7349128.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4726276 + 3493161 = 2174^2 + 1869^2 .

It is a cyclic number.

It is not a de Polignac number, because 8219437 - 2³ = 8219429 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 (8219447) 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, 5088 + ... + 6505.

It is an arithmetic number, because the mean of its divisors is an integer number (2057935).

Almost surely, 2^8219437 is an apocalyptic number.

It is an amenable number.

8219437 is a deficient number, since it is larger than the sum of its proper divisors (12303).

8219437 is a wasteful number, since it uses less digits than its factorization.

8219437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302.

The product of its digits is 12096, while the sum is 34.

The square root of 8219437 is about 2866.9560512851. The cubic root of 8219437 is about 201.8121722330.

The spelling of 8219437 in words is "eight million, two hundred nineteen thousand, four hundred thirty-seven".