3899389909 has 8 divisors (see below), whose sum is σ = 4271137560. Its totient is φ = 3543461376.

The previous prime is 3899389903. The next prime is 3899389951. The reversal of 3899389909 is 9099839983.

It can be written as a sum of positive squares in 4 ways, for example, as 2352541009 + 1546848900 = 48503^2 + 39330^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3899389909 is a prime.

It is a super-2 number, since 2×3899389909² = 30410483324822056562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899389903) 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, 3954264 + ... + 3955249.

It is an arithmetic number, because the mean of its divisors is an integer number (533892195).

Almost surely, 2^3899389909 is an apocalyptic number.

It is an amenable number.

3899389909 is a deficient number, since it is larger than the sum of its proper divisors (371747651).

3899389909 is a wasteful number, since it uses less digits than its factorization.

3899389909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7909559.

The product of its (nonzero) digits is 34012224, while the sum is 67.

The square root of 3899389909 is about 62445.0951556645. The cubic root of 3899389909 is about 1573.9788336846.

The spelling of 3899389909 in words is "three billion, eight hundred ninety-nine million, three hundred eighty-nine thousand, nine hundred nine".