3998894133 has 16 divisors (see below), whose sum is σ = 5747898240. Its totient is φ = 2458330944.

The previous prime is 3998894117. The next prime is 3998894167. The reversal of 3998894133 is 3314988993.

3998894133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3998894133 - 2⁴ = 3998894117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998894113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13818 + ... + 90491.

It is an arithmetic number, because the mean of its divisors is an integer number (359243640).

Almost surely, 2^3998894133 is an apocalyptic number.

It is an amenable number.

3998894133 is a deficient number, since it is larger than the sum of its proper divisors (1749004107).

3998894133 is a wasteful number, since it uses less digits than its factorization.

3998894133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105308.

The product of its digits is 5038848, while the sum is 57.

The square root of 3998894133 is about 63236.8099527482. The cubic root of 3998894133 is about 1587.2547506150.

The spelling of 3998894133 in words is "three billion, nine hundred ninety-eight million, eight hundred ninety-four thousand, one hundred thirty-three".