83911679 has 4 divisors (see below), whose sum is σ = 83955576. Its totient is φ = 83867784.

The previous prime is 83911673. The next prime is 83911687. The reversal of 83911679 is 97611938.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83911679 - 2¹² = 83907583 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 (83911673) 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, 18944 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (20988894).

Almost surely, 2^83911679 is an apocalyptic number.

83911679 is a deficient number, since it is larger than the sum of its proper divisors (43897).

83911679 is a wasteful number, since it uses less digits than its factorization.

83911679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43896.

The product of its digits is 81648, while the sum is 44.

The square root of 83911679 is about 9160.3318171341. The cubic root of 83911679 is about 437.7983667046.

The spelling of 83911679 in words is "eighty-three million, nine hundred eleven thousand, six hundred seventy-nine".