8139216 has 20 divisors (see below), whose sum is σ = 21026432. Its totient is φ = 2713056.

The previous prime is 8139211. The next prime is 8139221. The reversal of 8139216 is 6129318.

It is an interprime number because it is at equal distance from previous prime (8139211) and next prime (8139221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139211) 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 3 ways as a sum of consecutive naturals, for example, 84736 + ... + 84831.

Almost surely, 2^8139216 is an apocalyptic number.

It is an amenable number.

8139216 is an abundant number, since it is smaller than the sum of its proper divisors (12887216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8139216 is a wasteful number, since it uses less digits than its factorization.

8139216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169578 (or 169572 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 8139216 is about 2852.9311243001. The cubic root of 8139216 is about 201.1534681011.

The spelling of 8139216 in words is "eight million, one hundred thirty-nine thousand, two hundred sixteen".