8398387 has 2 divisors, whose sum is σ = 8398388. Its totient is φ = 8398386.

The previous prime is 8398349. The next prime is 8398393. The reversal of 8398387 is 7838938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8398387 - 2¹⁹ = 7874099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8398337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4199193 + 4199194.

It is an arithmetic number, because the mean of its divisors is an integer number (4199194).

Almost surely, 2^8398387 is an apocalyptic number.

8398387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8398387 is an equidigital number, since it uses as much as digits as its factorization.

8398387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 8398387 is about 2897.9970669412. The cubic root of 8398387 is about 203.2662590433.

The spelling of 8398387 in words is "eight million, three hundred ninety-eight thousand, three hundred eighty-seven".