3989253239429 has 4 divisors (see below), whose sum is σ = 4054650833580. Its totient is φ = 3923855645280.

The previous prime is 3989253239423. The next prime is 3989253239431. The reversal of 3989253239429 is 9249323529893.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1828382639329 + 2160870600100 = 1352177^2 + 1469990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3989253239429 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 (3989253239423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32698796984 + ... + 32698797105.

It is an arithmetic number, because the mean of its divisors is an integer number (1013662708395).

Almost surely, 2^{3989253239429} is an apocalyptic number.

It is an amenable number.

3989253239429 is a deficient number, since it is larger than the sum of its proper divisors (65397594151).

3989253239429 is an equidigital number, since it uses as much as digits as its factorization.

3989253239429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65397594150.

The product of its digits is 226748160, while the sum is 68.

The spelling of 3989253239429 in words is "three trillion, nine hundred eighty-nine billion, two hundred fifty-three million, two hundred thirty-nine thousand, four hundred twenty-nine".