82634989 has 2 divisors, whose sum is σ = 82634990. Its totient is φ = 82634988.

The previous prime is 82634947. The next prime is 82635001. The reversal of 82634989 is 98943628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82628100 + 6889 = 9090^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 82634989 - 2¹¹ = 82632941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82634939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41317494 + 41317495.

It is an arithmetic number, because the mean of its divisors is an integer number (41317495).

Almost surely, 2^82634989 is an apocalyptic number.

It is an amenable number.

82634989 is a deficient number, since it is larger than the sum of its proper divisors (1).

82634989 is an equidigital number, since it uses as much as digits as its factorization.

82634989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 82634989 is about 9090.3789249954. The cubic root of 82634989 is about 435.5666882215.

The spelling of 82634989 in words is "eighty-two million, six hundred thirty-four thousand, nine hundred eighty-nine".