169739485 has 4 divisors (see below), whose sum is σ = 203687388. Its totient is φ = 135791584.

The previous prime is 169739429. The next prime is 169739491. The reversal of 169739485 is 584937961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584937961 = 19381 ⋅30181.

It can be written as a sum of positive squares in 2 ways, for example, as 113998329 + 55741156 = 10677^2 + 7466^2 .

It is a cyclic number.

It is not a de Polignac number, because 169739485 - 2¹⁵ = 169706717 is a prime.

It is a super-2 number, since 2×169739485² = 57622985536130450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16973944 + ... + 16973953.

It is an arithmetic number, because the mean of its divisors is an integer number (50921847).

Almost surely, 2^169739485 is an apocalyptic number.

It is an amenable number.

169739485 is a deficient number, since it is larger than the sum of its proper divisors (33947903).

169739485 is an equidigital number, since it uses as much as digits as its factorization.

169739485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33947902.

The product of its digits is 1632960, while the sum is 52.

The square root of 169739485 is about 13028.4106858818. The cubic root of 169739485 is about 553.6827076584.

The spelling of 169739485 in words is "one hundred sixty-nine million, seven hundred thirty-nine thousand, four hundred eighty-five".