8506399 has 8 divisors (see below), whose sum is σ = 9302400. Its totient is φ = 7714200.

The previous prime is 8506391. The next prime is 8506403. The reversal of 8506399 is 9936058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8506399 - 2³ = 8506391 is a prime.

It is a Duffinian number.

8506399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8506391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5944 + ... + 7234.

It is an arithmetic number, because the mean of its divisors is an integer number (1162800).

Almost surely, 2^8506399 is an apocalyptic number.

8506399 is a deficient number, since it is larger than the sum of its proper divisors (796001).

8506399 is a wasteful number, since it uses less digits than its factorization.

8506399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

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

The square root of 8506399 is about 2916.5731604059. The cubic root of 8506399 is about 204.1339550165.

The spelling of 8506399 in words is "eight million, five hundred six thousand, three hundred ninety-nine".