169713939 has 4 divisors (see below), whose sum is σ = 226285256. Its totient is φ = 113142624.

The previous prime is 169713937. The next prime is 169713949. The reversal of 169713939 is 939317961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939317961 = 3 ⋅313105987.

It is not a de Polignac number, because 169713939 - 2¹ = 169713937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169713937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28285654 + ... + 28285659.

It is an arithmetic number, because the mean of its divisors is an integer number (56571314).

Almost surely, 2^169713939 is an apocalyptic number.

169713939 is a deficient number, since it is larger than the sum of its proper divisors (56571317).

169713939 is an equidigital number, since it uses as much as digits as its factorization.

169713939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56571316.

The product of its digits is 275562, while the sum is 48.

The square root of 169713939 is about 13027.4302531236. The cubic root of 169713939 is about 553.6549296233.

It can be divided in two parts, 16971 and 3939, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 169713939 in words is "one hundred sixty-nine million, seven hundred thirteen thousand, nine hundred thirty-nine".