83719117 has 4 divisors (see below), whose sum is σ = 83737696. Its totient is φ = 83700540.

The previous prime is 83719109. The next prime is 83719157. The reversal of 83719117 is 71191738.

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: 71191738 = 2 ⋅35595869.

It is a cyclic number.

It is not a de Polignac number, because 83719117 - 2³ = 83719109 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 (83719157) 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, 2242 + ... + 13132.

It is an arithmetic number, because the mean of its divisors is an integer number (20934424).

Almost surely, 2^83719117 is an apocalyptic number.

It is an amenable number.

83719117 is a deficient number, since it is larger than the sum of its proper divisors (18579).

83719117 is a wasteful number, since it uses less digits than its factorization.

83719117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18578.

The product of its digits is 10584, while the sum is 37.

The square root of 83719117 is about 9149.8151347445. The cubic root of 83719117 is about 437.4632210715.

The spelling of 83719117 in words is "eighty-three million, seven hundred nineteen thousand, one hundred seventeen".