3898897985 has 8 divisors (see below), whose sum is σ = 4679021376. Its totient is φ = 3118889200.

The previous prime is 3898897927. The next prime is 3898897991. The reversal of 3898897985 is 5897988983.

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

It is not a de Polignac number, because 3898897985 - 2¹⁸ = 3898635841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93710 + ... + 128760.

It is an arithmetic number, because the mean of its divisors is an integer number (584877672).

Almost surely, 2^3898897985 is an apocalyptic number.

It is an amenable number.

3898897985 is a deficient number, since it is larger than the sum of its proper divisors (780123391).

3898897985 is a wasteful number, since it uses less digits than its factorization.

3898897985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57303.

The product of its digits is 313528320, while the sum is 74.

The square root of 3898897985 is about 62441.1561792381. The cubic root of 3898897985 is about 1573.9126429433.

The spelling of 3898897985 in words is "three billion, eight hundred ninety-eight million, eight hundred ninety-seven thousand, nine hundred eighty-five".