3639189 has 4 divisors (see below), whose sum is σ = 4852256. Its totient is φ = 2426124.

The previous prime is 3639161. The next prime is 3639193. The reversal of 3639189 is 9819363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3639189 - 2⁵ = 3639157 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639109) 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, 606529 + ... + 606534.

It is an arithmetic number, because the mean of its divisors is an integer number (1213064).

Almost surely, 2^3639189 is an apocalyptic number.

It is an amenable number.

3639189 is a deficient number, since it is larger than the sum of its proper divisors (1213067).

3639189 is a wasteful number, since it uses less digits than its factorization.

3639189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213066.

The product of its digits is 34992, while the sum is 39.

The square root of 3639189 is about 1907.6658512433. The cubic root of 3639189 is about 153.8160084076.

It can be divided in two parts, 3639 and 189, that added together give a triangular number (3828 = T₈₇).

The spelling of 3639189 in words is "three million, six hundred thirty-nine thousand, one hundred eighty-nine".