83139611 has 8 divisors (see below), whose sum is σ = 87836880. Its totient is φ = 78474528.

The previous prime is 83139599. The next prime is 83139631. The reversal of 83139611 is 11693138.

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 83139611 - 2⁶ = 83139547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83139631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2636 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (10979610).

Almost surely, 2^83139611 is an apocalyptic number.

83139611 is a deficient number, since it is larger than the sum of its proper divisors (4697269).

83139611 is a wasteful number, since it uses less digits than its factorization.

83139611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16093.

The product of its digits is 3888, while the sum is 32.

The square root of 83139611 is about 9118.0925088529. The cubic root of 83139611 is about 436.4515056647.

The spelling of 83139611 in words is "eighty-three million, one hundred thirty-nine thousand, six hundred eleven".