83923847 has 4 divisors (see below), whose sum is σ = 95912976. Its totient is φ = 71934720.

The previous prime is 83923823. The next prime is 83923877. The reversal of 83923847 is 74832938.

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 83923847 - 2⁸ = 83923591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83923798 and 83923807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83923877) 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, 5994554 + ... + 5994567.

It is an arithmetic number, because the mean of its divisors is an integer number (23978244).

Almost surely, 2^83923847 is an apocalyptic number.

83923847 is a deficient number, since it is larger than the sum of its proper divisors (11989129).

83923847 is a wasteful number, since it uses less digits than its factorization.

83923847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11989128.

The product of its digits is 290304, while the sum is 44.

The square root of 83923847 is about 9160.9959611387. The cubic root of 83923847 is about 437.8195273389.

Subtracting from 83923847 its reverse (74832938), we obtain a palindrome (9090909).

The spelling of 83923847 in words is "eighty-three million, nine hundred twenty-three thousand, eight hundred forty-seven".