3998489439 has 16 divisors (see below), whose sum is σ = 6094038528. Its totient is φ = 2284437792.

The previous prime is 3998489423. The next prime is 3998489483. The reversal of 3998489439 is 9349848993.

It is not a de Polignac number, because 3998489439 - 2⁴ = 3998489423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3998489439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998489239) 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 15 ways as a sum of consecutive naturals, for example, 131494 + ... + 159020.

It is an arithmetic number, because the mean of its divisors is an integer number (380877408).

Almost surely, 2^3998489439 is an apocalyptic number.

3998489439 is a deficient number, since it is larger than the sum of its proper divisors (2095549089).

3998489439 is a wasteful number, since it uses less digits than its factorization.

3998489439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34454.

The product of its digits is 60466176, while the sum is 66.

The square root of 3998489439 is about 63233.6100424450. The cubic root of 3998489439 is about 1587.2012046326.

The spelling of 3998489439 in words is "three billion, nine hundred ninety-eight million, four hundred eighty-nine thousand, four hundred thirty-nine".