169420239 has 24 divisors (see below), whose sum is σ = 253628544. Its totient is φ = 108864000.

The previous prime is 169420219. The next prime is 169420253. The reversal of 169420239 is 932024961.

169420239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169420239 - 2⁹ = 169419727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169420219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77319 + ... + 79479.

It is an arithmetic number, because the mean of its divisors is an integer number (10567856).

Almost surely, 2^169420239 is an apocalyptic number.

169420239 is a deficient number, since it is larger than the sum of its proper divisors (84208305).

169420239 is a wasteful number, since it uses less digits than its factorization.

169420239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479 (or 2476 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 169420239 is about 13016.1530030958. The cubic root of 169420239 is about 553.3353676882.

The spelling of 169420239 in words is "one hundred sixty-nine million, four hundred twenty thousand, two hundred thirty-nine".