3898513729 has 32 divisors (see below), whose sum is σ = 4572564480. Its totient is φ = 3284582400.

The previous prime is 3898513699. The next prime is 3898513753. The reversal of 3898513729 is 9273158983.

It is not a de Polignac number, because 3898513729 - 2¹¹ = 3898511681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3898513729.

It is not an unprimeable number, because it can be changed into a prime (3898513799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3933424 + ... + 3934414.

It is an arithmetic number, because the mean of its divisors is an integer number (142892640).

Almost surely, 2^3898513729 is an apocalyptic number.

It is an amenable number.

3898513729 is a deficient number, since it is larger than the sum of its proper divisors (674050751).

3898513729 is a wasteful number, since it uses less digits than its factorization.

3898513729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321.

The product of its digits is 3265920, while the sum is 55.

The square root of 3898513729 is about 62438.0791584751. The cubic root of 3898513729 is about 1573.8609355764.

The spelling of 3898513729 in words is "three billion, eight hundred ninety-eight million, five hundred thirteen thousand, seven hundred twenty-nine".