83928047 has 4 divisors (see below), whose sum is σ = 95917776. Its totient is φ = 71938320.

The previous prime is 83928043. The next prime is 83928049. The reversal of 83928047 is 74082938.

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 83928047 - 2² = 83928043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83927995 and 83928013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83928043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5994854 + ... + 5994867.

It is an arithmetic number, because the mean of its divisors is an integer number (23979444).

Almost surely, 2^83928047 is an apocalyptic number.

83928047 is a deficient number, since it is larger than the sum of its proper divisors (11989729).

83928047 is a wasteful number, since it uses less digits than its factorization.

83928047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989728.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 83928047 is about 9161.2251909884. The cubic root of 83928047 is about 437.8268308305.

The spelling of 83928047 in words is "eighty-three million, nine hundred twenty-eight thousand, forty-seven".