82669443 has 16 divisors (see below), whose sum is σ = 112492800. Its totient is φ = 53986400.

The previous prime is 82669421. The next prime is 82669451. The reversal of 82669443 is 34496628.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82669443 - 2⁹ = 82668931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82669395 and 82669404.

It is not an unprimeable number, because it can be changed into a prime (82669403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62893 + ... + 64193.

It is an arithmetic number, because the mean of its divisors is an integer number (7030800).

Almost surely, 2^82669443 is an apocalyptic number.

82669443 is a deficient number, since it is larger than the sum of its proper divisors (29823357).

82669443 is a wasteful number, since it uses less digits than its factorization.

82669443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722.

The product of its digits is 248832, while the sum is 42.

The square root of 82669443 is about 9092.2738080196. The cubic root of 82669443 is about 435.6272151631.

The spelling of 82669443 in words is "eighty-two million, six hundred sixty-nine thousand, four hundred forty-three".