8139653 has 4 divisors (see below), whose sum is σ = 8254368. Its totient is φ = 8024940.

The previous prime is 8139641. The next prime is 8139661. The reversal of 8139653 is 3569318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3569318 = 2 ⋅1784659.

It is a cyclic number.

It is not a de Polignac number, because 8139653 - 2⁶ = 8139589 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 3 ways as a sum of consecutive naturals, for example, 57251 + ... + 57392.

It is an arithmetic number, because the mean of its divisors is an integer number (2063592).

Almost surely, 2^8139653 is an apocalyptic number.

It is an amenable number.

8139653 is a deficient number, since it is larger than the sum of its proper divisors (114715).

8139653 is a wasteful number, since it uses less digits than its factorization.

8139653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114714.

The product of its digits is 19440, while the sum is 35.

The square root of 8139653 is about 2853.0077111708. The cubic root of 8139653 is about 201.1570680585.

The spelling of 8139653 in words is "eight million, one hundred thirty-nine thousand, six hundred fifty-three".