162989 has 2 divisors, whose sum is σ = 162990. Its totient is φ = 162988.

The previous prime is 162973. The next prime is 162997. The reversal of 162989 is 989261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100489 + 62500 = 317^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 162989 - 2⁴ = 162973 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81494 + 81495.

It is an arithmetic number, because the mean of its divisors is an integer number (81495).

2¹⁶²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

162989 is a deficient number, since it is larger than the sum of its proper divisors (1).

162989 is an equidigital number, since it uses as much as digits as its factorization.

162989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 162989 is about 403.7189616553. The cubic root of 162989 is about 54.6243268894.

The spelling of 162989 in words is "one hundred sixty-two thousand, nine hundred eighty-nine".