3949324189 has 4 divisors (see below), whose sum is σ = 3949861120. Its totient is φ = 3948787260.

The previous prime is 3949324157. The next prime is 3949324193. The reversal of 3949324189 is 9814239493.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 3949324189 - 2⁵ = 3949324157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949324129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257277 + ... + 272194.

It is an arithmetic number, because the mean of its divisors is an integer number (987465280).

Almost surely, 2^3949324189 is an apocalyptic number.

It is an amenable number.

3949324189 is a deficient number, since it is larger than the sum of its proper divisors (536931).

3949324189 is an equidigital number, since it uses as much as digits as its factorization.

3949324189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536930.

The product of its digits is 1679616, while the sum is 52.

The square root of 3949324189 is about 62843.6487562586. The cubic root of 3949324189 is about 1580.6689723117.

The spelling of 3949324189 in words is "three billion, nine hundred forty-nine million, three hundred twenty-four thousand, one hundred eighty-nine".