3899428128 has 60 divisors (see below), whose sum is σ = 11468117430. Its totient is φ = 1299808512.

The previous prime is 3899428103. The next prime is 3899428139. The reversal of 3899428128 is 8218249983.

3899428128 is a `hidden beast` number, since 3 + 8 + 99 + 428 + 128 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3558361104 + 341067024 = 59652^2 + 18468^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 749613 + ... + 754796.

Almost surely, 2^3899428128 is an apocalyptic number.

It is an amenable number.

3899428128 is an abundant number, since it is smaller than the sum of its proper divisors (7568689302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3899428128 is a wasteful number, since it uses less digits than its factorization.

3899428128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504431 (or 1504414 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 3899428128 is about 62445.4011757471. The cubic root of 3899428128 is about 1573.9839760019.

The spelling of 3899428128 in words is "three billion, eight hundred ninety-nine million, four hundred twenty-eight thousand, one hundred twenty-eight".