82943817 has 32 divisors (see below), whose sum is σ = 126074880. Its totient is φ = 48048000.

The previous prime is 82943813. The next prime is 82943831. The reversal of 82943817 is 71834928.

It is not a de Polignac number, because 82943817 - 2² = 82943813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82943813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90592 + ... + 91502.

It is an arithmetic number, because the mean of its divisors is an integer number (3939840).

Almost surely, 2^82943817 is an apocalyptic number.

It is an amenable number.

82943817 is a deficient number, since it is larger than the sum of its proper divisors (43131063).

82943817 is a wasteful number, since it uses less digits than its factorization.

82943817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

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

The square root of 82943817 is about 9107.3496144597. The cubic root of 82943817 is about 436.1086215493.

Subtracting from 82943817 its reverse (71834928), we obtain a square (11108889 = 3333²).

The spelling of 82943817 in words is "eighty-two million, nine hundred forty-three thousand, eight hundred seventeen".