83938647 has 16 divisors (see below), whose sum is σ = 121984128. Its totient is φ = 51030240.

The previous prime is 83938633. The next prime is 83938721. The reversal of 83938647 is 74683938.

It is not a de Polignac number, because 83938647 - 2⁶ = 83938583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83938596 and 83938605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83938627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9729 + ... + 16202.

It is an arithmetic number, because the mean of its divisors is an integer number (7624008).

Almost surely, 2^83938647 is an apocalyptic number.

83938647 is a deficient number, since it is larger than the sum of its proper divisors (38045481).

83938647 is a wasteful number, since it uses less digits than its factorization.

83938647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26030.

The product of its digits is 870912, while the sum is 48.

The square root of 83938647 is about 9161.8036979625. The cubic root of 83938647 is about 437.8452623688.

The spelling of 83938647 in words is "eighty-three million, nine hundred thirty-eight thousand, six hundred forty-seven".