83963191 has 8 divisors (see below), whose sum is σ = 90493200. Its totient is φ = 77443392.

The previous prime is 83963171. The next prime is 83963227. The reversal of 83963191 is 19136938.

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

It is a de Polignac number, because none of the positive numbers 2^k-83963191 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 (83963161) 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, 29760 + ... + 32458.

It is an arithmetic number, because the mean of its divisors is an integer number (11311650).

Almost surely, 2^83963191 is an apocalyptic number.

83963191 is a deficient number, since it is larger than the sum of its proper divisors (6530009).

83963191 is a wasteful number, since it uses less digits than its factorization.

83963191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105.

The product of its digits is 34992, while the sum is 40.

The square root of 83963191 is about 9163.1430742950. The cubic root of 83963191 is about 437.8879341187.

The spelling of 83963191 in words is "eighty-three million, nine hundred sixty-three thousand, one hundred ninety-one".