169139290 has 32 divisors (see below), whose sum is σ = 323357184. Its totient is φ = 63479040.

The previous prime is 169139279. The next prime is 169139291. The reversal of 169139290 is 92931961.

It is not an unprimeable number, because it can be changed into a prime (169139291) 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 in 15 ways as a sum of consecutive naturals, for example, 61035 + ... + 63745.

It is an arithmetic number, because the mean of its divisors is an integer number (10104912).

Almost surely, 2^169139290 is an apocalyptic number.

169139290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169139290 is a deficient number, since it is larger than the sum of its proper divisors (154217894).

169139290 is a wasteful number, since it uses less digits than its factorization.

169139290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 169139290 is about 13005.3562042721. The cubic root of 169139290 is about 553.0293337480.

The spelling of 169139290 in words is "one hundred sixty-nine million, one hundred thirty-nine thousand, two hundred ninety".