83197911 has 8 divisors (see below), whose sum is σ = 111637744. Its totient is φ = 55111680.

The previous prime is 83197909. The next prime is 83197927. The reversal of 83197911 is 11979138.

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

It is not a de Polignac number, because 83197911 - 2¹ = 83197909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83197911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83117911) 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, 87850 + ... + 88791.

It is an arithmetic number, because the mean of its divisors is an integer number (13954718).

Almost surely, 2^83197911 is an apocalyptic number.

83197911 is a deficient number, since it is larger than the sum of its proper divisors (28439833).

83197911 is a wasteful number, since it uses less digits than its factorization.

83197911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176801.

The product of its digits is 13608, while the sum is 39.

The square root of 83197911 is about 9121.2888891867. The cubic root of 83197911 is about 436.5534994763.

The spelling of 83197911 in words is "eighty-three million, one hundred ninety-seven thousand, nine hundred eleven".