82773889 has 16 divisors (see below), whose sum is σ = 92315520. Its totient is φ = 73584000.

The previous prime is 82773881. The next prime is 82773923. The reversal of 82773889 is 98837728.

It is a cyclic number.

It is not a de Polignac number, because 82773889 - 2³ = 82773881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82773881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188332 + ... + 188770.

It is an arithmetic number, because the mean of its divisors is an integer number (5769720).

Almost surely, 2^82773889 is an apocalyptic number.

It is an amenable number.

82773889 is a deficient number, since it is larger than the sum of its proper divisors (9541631).

82773889 is a wasteful number, since it uses less digits than its factorization.

82773889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 1354752, while the sum is 52.

The square root of 82773889 is about 9098.0156627695. The cubic root of 82773889 is about 435.8105976008.

The spelling of 82773889 in words is "eighty-two million, seven hundred seventy-three thousand, eight hundred eighty-nine".