3998401428 has 48 divisors (see below), whose sum is σ = 11289608064. Its totient is φ = 1075200000.

The previous prime is 3998401427. The next prime is 3998401453. The reversal of 3998401428 is 8241048993.

3998401428 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998401427) 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, 1398573 + ... + 1401428.

It is an arithmetic number, because the mean of its divisors is an integer number (235200168).

Almost surely, 2^3998401428 is an apocalyptic number.

It is an amenable number.

3998401428 is an abundant number, since it is smaller than the sum of its proper divisors (7291206636).

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

3998401428 is a wasteful number, since it uses less digits than its factorization.

3998401428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800032 (or 2800030 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 3998401428 is about 63232.9141191516. The cubic root of 3998401428 is about 1587.1895592190.

The spelling of 3998401428 in words is "three billion, nine hundred ninety-eight million, four hundred one thousand, four hundred twenty-eight".