169489963 has 2 divisors, whose sum is σ = 169489964. Its totient is φ = 169489962.

The previous prime is 169489951. The next prime is 169489973. The reversal of 169489963 is 369984961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 169489963 - 2⁹ = 169489451 is a prime.

It is not a weakly prime, because it can be changed into another prime (169489973) 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 as a sum of consecutive naturals, namely, 84744981 + 84744982.

It is an arithmetic number, because the mean of its divisors is an integer number (84744982).

Almost surely, 2^169489963 is an apocalyptic number.

169489963 is a deficient number, since it is larger than the sum of its proper divisors (1).

169489963 is an equidigital number, since it uses as much as digits as its factorization.

169489963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 55.

The square root of 169489963 is about 13018.8310919222. The cubic root of 169489963 is about 553.4112646886.

The spelling of 169489963 in words is "one hundred sixty-nine million, four hundred eighty-nine thousand, nine hundred sixty-three".