3949189 has 8 divisors (see below), whose sum is σ = 4053240. Its totient is φ = 3846336.

The previous prime is 3949177. The next prime is 3949193. The reversal of 3949189 is 9819493.

It can be written as a sum of positive squares in 4 ways, for example, as 16900 + 3932289 = 130^2 + 1983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3949189 - 2⁵ = 3949157 is a prime.

It is an Ulam number.

It is a Duffinian number.

3949189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14119 + ... + 14395.

It is an arithmetic number, because the mean of its divisors is an integer number (506655).

Almost surely, 2^3949189 is an apocalyptic number.

It is an amenable number.

3949189 is a deficient number, since it is larger than the sum of its proper divisors (104051).

3949189 is a wasteful number, since it uses less digits than its factorization.

3949189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599.

The product of its digits is 69984, while the sum is 43.

The square root of 3949189 is about 1987.2566517690. The cubic root of 3949189 is about 158.0650936188.

The spelling of 3949189 in words is "three million, nine hundred forty-nine thousand, one hundred eighty-nine".