82889189 has 2 divisors, whose sum is σ = 82889190. Its totient is φ = 82889188.

The previous prime is 82889173. The next prime is 82889197. The reversal of 82889189 is 98198828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 9872164 = 8545^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 82889189 - 2⁴ = 82889173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82889189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82889089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41444594 + 41444595.

It is an arithmetic number, because the mean of its divisors is an integer number (41444595).

Almost surely, 2^82889189 is an apocalyptic number.

It is an amenable number.

82889189 is a deficient number, since it is larger than the sum of its proper divisors (1).

82889189 is an equidigital number, since it uses as much as digits as its factorization.

82889189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 53.

The square root of 82889189 is about 9104.3500042562. The cubic root of 82889189 is about 436.0128580362.

The spelling of 82889189 in words is "eighty-two million, eight hundred eighty-nine thousand, one hundred eighty-nine".