169440297 has 16 divisors (see below), whose sum is σ = 244570368. Its totient is φ = 103726080.

The previous prime is 169440289. The next prime is 169440317. The reversal of 169440297 is 792044961.

It is not a de Polignac number, because 169440297 - 2³ = 169440289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169440097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3729 + ... + 18782.

It is an arithmetic number, because the mean of its divisors is an integer number (15285648).

Almost surely, 2^169440297 is an apocalyptic number.

It is an amenable number.

169440297 is a deficient number, since it is larger than the sum of its proper divisors (75130071).

169440297 is a wasteful number, since it uses less digits than its factorization.

169440297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22720.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 169440297 is about 13016.9234844490. The cubic root of 169440297 is about 553.3572036524.

The spelling of 169440297 in words is "one hundred sixty-nine million, four hundred forty thousand, two hundred ninety-seven".