3898646839 has 8 divisors (see below), whose sum is σ = 4131775440. Its totient is φ = 3665940096.

The previous prime is 3898646837. The next prime is 3898646861. The reversal of 3898646839 is 9386468983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3898646839 - 2¹ = 3898646837 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 (3898646837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86329 + ... + 123490.

It is an arithmetic number, because the mean of its divisors is an integer number (516471930).

Almost surely, 2^3898646839 is an apocalyptic number.

3898646839 is a deficient number, since it is larger than the sum of its proper divisors (233128601).

3898646839 is a wasteful number, since it uses less digits than its factorization.

3898646839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210929.

The product of its digits is 53747712, while the sum is 64.

The square root of 3898646839 is about 62439.1450854350. The cubic root of 3898646839 is about 1573.8788478937.

The spelling of 3898646839 in words is "three billion, eight hundred ninety-eight million, six hundred forty-six thousand, eight hundred thirty-nine".