82917199 has 4 divisors (see below), whose sum is σ = 83212560. Its totient is φ = 82621840.

The previous prime is 82917193. The next prime is 82917203. The reversal of 82917199 is 99171928.

It is a happy number.

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 82917199 - 2¹³ = 82909007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82917193) 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, 147259 + ... + 147820.

It is an arithmetic number, because the mean of its divisors is an integer number (20803140).

Almost surely, 2^82917199 is an apocalyptic number.

82917199 is a deficient number, since it is larger than the sum of its proper divisors (295361).

82917199 is a wasteful number, since it uses less digits than its factorization.

82917199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295360.

The product of its digits is 81648, while the sum is 46.

The square root of 82917199 is about 9105.8881499830. Note that the first 3 decimals coincide. The cubic root of 82917199 is about 436.0619651430.

The spelling of 82917199 in words is "eighty-two million, nine hundred seventeen thousand, one hundred ninety-nine".