3639169 has 4 divisors (see below), whose sum is σ = 3645396. Its totient is φ = 3632944.

The previous prime is 3639161. The next prime is 3639193. The reversal of 3639169 is 9619363.

3639169 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, and also an emirpimes, since its reverse is a distinct semiprime: 9619363 = 13 ⋅739951.

It can be written as a sum of positive squares in 2 ways, for example, as 442225 + 3196944 = 665^2 + 1788^2 .

It is a cyclic number.

It is not a de Polignac number, because 3639169 - 2³ = 3639161 is a prime.

It is a super-2 number, since 2×3639169² = 26487102021122, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁹ + 6⁷ + 3¹³ + 9⁴ + 1 + 6⁸ + 9⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3639161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134 + ... + 3439.

It is an arithmetic number, because the mean of its divisors is an integer number (911349).

Almost surely, 2^3639169 is an apocalyptic number.

It is an amenable number.

3639169 is a deficient number, since it is larger than the sum of its proper divisors (6227).

3639169 is an equidigital number, since it uses as much as digits as its factorization.

3639169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226.

The product of its digits is 26244, while the sum is 37.

The square root of 3639169 is about 1907.6606092280. The cubic root of 3639169 is about 153.8157266300.

The spelling of 3639169 in words is "three million, six hundred thirty-nine thousand, one hundred sixty-nine".