8139693 has 8 divisors (see below), whose sum is σ = 10883968. Its totient is φ = 5410944.

The previous prime is 8139683. The next prime is 8139707. The reversal of 8139693 is 3969318.

8139693 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8139693 - 2⁵ = 8139661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139683) 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, 2596 + ... + 4797.

It is an arithmetic number, because the mean of its divisors is an integer number (1360496).

Almost surely, 2^8139693 is an apocalyptic number.

It is an amenable number.

8139693 is a deficient number, since it is larger than the sum of its proper divisors (2744275).

8139693 is a wasteful number, since it uses less digits than its factorization.

8139693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763.

The product of its digits is 34992, while the sum is 39.

The square root of 8139693 is about 2853.0147213080. The cubic root of 8139693 is about 201.1573975676.

The spelling of 8139693 in words is "eight million, one hundred thirty-nine thousand, six hundred ninety-three".