82193847 has 4 divisors (see below), whose sum is σ = 109591800. Its totient is φ = 54795896.

The previous prime is 82193843. The next prime is 82193849. The reversal of 82193847 is 74839128.

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 82193847 - 2² = 82193843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82193799 and 82193808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82193843) 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, 13698972 + ... + 13698977.

It is an arithmetic number, because the mean of its divisors is an integer number (27397950).

Almost surely, 2^82193847 is an apocalyptic number.

82193847 is a deficient number, since it is larger than the sum of its proper divisors (27397953).

82193847 is a wasteful number, since it uses less digits than its factorization.

82193847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27397952.

The product of its digits is 96768, while the sum is 42.

The square root of 82193847 is about 9066.0822299381. The cubic root of 82193847 is about 434.7902225404.

The spelling of 82193847 in words is "eighty-two million, one hundred ninety-three thousand, eight hundred forty-seven".