82216969 has 4 divisors (see below), whose sum is σ = 83015296. Its totient is φ = 81418644.

The previous prime is 82216963. The next prime is 82216987. The reversal of 82216969 is 96961228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82216969 - 2³ = 82216961 is a prime.

It is a super-2 number, since 2×82216969² = 13519259983093922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82216961) 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, 399009 + ... + 399214.

It is an arithmetic number, because the mean of its divisors is an integer number (20753824).

Almost surely, 2^82216969 is an apocalyptic number.

It is an amenable number.

82216969 is a deficient number, since it is larger than the sum of its proper divisors (798327).

82216969 is a wasteful number, since it uses less digits than its factorization.

82216969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798326.

The product of its digits is 93312, while the sum is 43.

The square root of 82216969 is about 9067.3573327624. The cubic root of 82216969 is about 434.8309890834.

The spelling of 82216969 in words is "eighty-two million, two hundred sixteen thousand, nine hundred sixty-nine".