39493169 has 4 divisors (see below), whose sum is σ = 40140660. Its totient is φ = 38845680.

The previous prime is 39493133. The next prime is 39493183. The reversal of 39493169 is 96139493.

39493169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20133169 + 19360000 = 4487^2 + 4400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39493169 is a prime.

It is a super-2 number, since 2×39493169² = 3119420795325122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39492169) 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 3 ways as a sum of consecutive naturals, for example, 323654 + ... + 323775.

It is an arithmetic number, because the mean of its divisors is an integer number (10035165).

Almost surely, 2^39493169 is an apocalyptic number.

It is an amenable number.

39493169 is a deficient number, since it is larger than the sum of its proper divisors (647491).

39493169 is an equidigital number, since it uses as much as digits as its factorization.

39493169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647490.

The product of its digits is 157464, while the sum is 44.

The square root of 39493169 is about 6284.3590763100. The cubic root of 39493169 is about 340.5445972336.

The spelling of 39493169 in words is "thirty-nine million, four hundred ninety-three thousand, one hundred sixty-nine".