170988473 has 2 divisors, whose sum is σ = 170988474. Its totient is φ = 170988472.

The previous prime is 170988449. The next prime is 170988523. The reversal of 170988473 is 374889071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170119849 + 868624 = 13043^2 + 932^2 .

It is an emirp because it is prime and its reverse (374889071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170988473 - 2¹⁰ = 170987449 is a prime.

It is not a weakly prime, because it can be changed into another prime (170988403) 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, 85494236 + 85494237.

It is an arithmetic number, because the mean of its divisors is an integer number (85494237).

Almost surely, 2^170988473 is an apocalyptic number.

It is an amenable number.

170988473 is a deficient number, since it is larger than the sum of its proper divisors (1).

170988473 is an equidigital number, since it uses as much as digits as its factorization.

170988473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 170988473 is about 13076.2560773335. The cubic root of 170988473 is about 555.0374381584.

The spelling of 170988473 in words is "one hundred seventy million, nine hundred eighty-eight thousand, four hundred seventy-three".