8316139 has 4 divisors (see below), whose sum is σ = 8955856. Its totient is φ = 7676424.

The previous prime is 8316131. The next prime is 8316151. The reversal of 8316139 is 9316138.

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

It is a cyclic number.

It is not a de Polignac number, because 8316139 - 2³ = 8316131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8316139.

It is not an unprimeable number, because it can be changed into a prime (8316131) 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, 319839 + ... + 319864.

It is an arithmetic number, because the mean of its divisors is an integer number (2238964).

Almost surely, 2^8316139 is an apocalyptic number.

8316139 is a deficient number, since it is larger than the sum of its proper divisors (639717).

8316139 is a wasteful number, since it uses less digits than its factorization.

8316139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639716.

The product of its digits is 3888, while the sum is 31.

The square root of 8316139 is about 2883.7716622507. The cubic root of 8316139 is about 202.6005312951.

Subtracting 8316139 from its reverse (9316138), we obtain a palindrome (999999).

The spelling of 8316139 in words is "eight million, three hundred sixteen thousand, one hundred thirty-nine".