3898825709 has 4 divisors (see below), whose sum is σ = 3905335200. Its totient is φ = 3892316220.

The previous prime is 3898825699. The next prime is 3898825729. The reversal of 3898825709 is 9075288983.

3898825709 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3898825709 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 (3898825729) 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, 3253847 + ... + 3255044.

It is an arithmetic number, because the mean of its divisors is an integer number (976333800).

Almost surely, 2^3898825709 is an apocalyptic number.

It is an amenable number.

3898825709 is a deficient number, since it is larger than the sum of its proper divisors (6509491).

3898825709 is an equidigital number, since it uses as much as digits as its factorization.

3898825709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509490.

The product of its (nonzero) digits is 8709120, while the sum is 59.

The square root of 3898825709 is about 62440.5774236594. The cubic root of 3898825709 is about 1573.9029173906.

The spelling of 3898825709 in words is "three billion, eight hundred ninety-eight million, eight hundred twenty-five thousand, seven hundred nine".