3989490343 has 4 divisors (see below), whose sum is σ = 3990124080. Its totient is φ = 3988856608.

The previous prime is 3989490319. The next prime is 3989490391. The reversal of 3989490343 is 3430949893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3989490343 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 (3989490313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307330 + ... + 320047.

It is an arithmetic number, because the mean of its divisors is an integer number (997531020).

Almost surely, 2^3989490343 is an apocalyptic number.

3989490343 is a deficient number, since it is larger than the sum of its proper divisors (633737).

3989490343 is an equidigital number, since it uses as much as digits as its factorization.

3989490343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633736.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The square root of 3989490343 is about 63162.4124222627. The cubic root of 3989490343 is about 1586.0095792158.

The spelling of 3989490343 in words is "three billion, nine hundred eighty-nine million, four hundred ninety thousand, three hundred forty-three".