169139983 has 2 divisors, whose sum is σ = 169139984. Its totient is φ = 169139982.

The previous prime is 169139951. The next prime is 169140001. The reversal of 169139983 is 389931961.

It is a strong prime.

It is an emirp because it is prime and its reverse (389931961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169139983 - 2⁵ = 169139951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169139903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84569991 + 84569992.

It is an arithmetic number, because the mean of its divisors is an integer number (84569992).

Almost surely, 2^169139983 is an apocalyptic number.

169139983 is a deficient number, since it is larger than the sum of its proper divisors (1).

169139983 is an equidigital number, since it uses as much as digits as its factorization.

169139983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 49.

The square root of 169139983 is about 13005.3828471137. The cubic root of 169139983 is about 553.0300890403.

It can be divided in two parts, 16913 and 9983, that added together give a square (26896 = 164²).

The spelling of 169139983 in words is "one hundred sixty-nine million, one hundred thirty-nine thousand, nine hundred eighty-three".