169297893 has 6 divisors (see below), whose sum is σ = 244541414. Its totient is φ = 112865256.

The previous prime is 169297879. The next prime is 169297927. The reversal of 169297893 is 398792961.

It can be written as a sum of positive squares in only one way, i.e., 166332609 + 2965284 = 12897^2 + 1722^2 .

It is not a de Polignac number, because 169297893 - 2⁸ = 169297637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169297813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9405430 + ... + 9405447.

Almost surely, 2^169297893 is an apocalyptic number.

It is an amenable number.

169297893 is a deficient number, since it is larger than the sum of its proper divisors (75243521).

169297893 is a wasteful number, since it uses less digits than its factorization.

169297893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18810883 (or 18810880 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 169297893 is about 13011.4523785779. The cubic root of 169297893 is about 553.2021394666.

The spelling of 169297893 in words is "one hundred sixty-nine million, two hundred ninety-seven thousand, eight hundred ninety-three".