82212959 has 4 divisors (see below), whose sum is σ = 83370960. Its totient is φ = 81054960.

The previous prime is 82212919. The next prime is 82212967. The reversal of 82212959 is 95921228.

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 82212959 - 2¹⁶ = 82147423 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 (82212919) 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, 578894 + ... + 579035.

It is an arithmetic number, because the mean of its divisors is an integer number (20842740).

Almost surely, 2^82212959 is an apocalyptic number.

82212959 is a deficient number, since it is larger than the sum of its proper divisors (1158001).

82212959 is a wasteful number, since it uses less digits than its factorization.

82212959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158000.

The product of its digits is 25920, while the sum is 38.

The square root of 82212959 is about 9067.1362072046. The cubic root of 82212959 is about 434.8239195752.

The spelling of 82212959 in words is "eighty-two million, two hundred twelve thousand, nine hundred fifty-nine".