8394437 has 2 divisors, whose sum is σ = 8394438. Its totient is φ = 8394436.

The previous prime is 8394433. The next prime is 8394439. The reversal of 8394437 is 7344938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 919681 = 2734^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 8394437 - 2² = 8394433 is a prime.

Together with 8394439, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8394437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8394433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4197218 + 4197219.

It is an arithmetic number, because the mean of its divisors is an integer number (4197219).

Almost surely, 2^8394437 is an apocalyptic number.

It is an amenable number.

8394437 is a deficient number, since it is larger than the sum of its proper divisors (1).

8394437 is an equidigital number, since it uses as much as digits as its factorization.

8394437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 8394437 is about 2897.3154816140. The cubic root of 8394437 is about 203.2343867472.

The spelling of 8394437 in words is "eight million, three hundred ninety-four thousand, four hundred thirty-seven".