8319139 has 4 divisors (see below), whose sum is σ = 8328240. Its totient is φ = 8310040.

The previous prime is 8319133. The next prime is 8319161. The reversal of 8319139 is 9319138.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9319138 = 2 ⋅4659569.

It is a cyclic number.

It is not a de Polignac number, because 8319139 - 2¹³ = 8310947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8319133) 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, 3004 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (2082060).

Almost surely, 2^8319139 is an apocalyptic number.

8319139 is a deficient number, since it is larger than the sum of its proper divisors (9101).

8319139 is a wasteful number, since it uses less digits than its factorization.

8319139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100.

The product of its digits is 5832, while the sum is 34.

The square root of 8319139 is about 2884.2917674882. The cubic root of 8319139 is about 202.6248906972.

Subtracting 8319139 from its reverse (9319138), we obtain a palindrome (999999).

The spelling of 8319139 in words is "eight million, three hundred nineteen thousand, one hundred thirty-nine".