8065399 has 2 divisors, whose sum is σ = 8065400. Its totient is φ = 8065398.

The previous prime is 8065391. The next prime is 8065417. The reversal of 8065399 is 9935608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8065399 - 2³ = 8065391 is a prime.

It is a super-2 number, since 2×8065399² = 130101322058402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8065391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4032699 + 4032700.

It is an arithmetic number, because the mean of its divisors is an integer number (4032700).

Almost surely, 2^8065399 is an apocalyptic number.

8065399 is a deficient number, since it is larger than the sum of its proper divisors (1).

8065399 is an equidigital number, since it uses as much as digits as its factorization.

8065399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 8065399 is about 2839.9646124556. The cubic root of 8065399 is about 200.5435132952.

It can be divided in two parts, 8065 and 399, that added together give a square (8464 = 92²).

The spelling of 8065399 in words is "eight million, sixty-five thousand, three hundred ninety-nine".