3998800100 has 36 divisors (see below), whose sum is σ = 8819662068. Its totient is φ = 1573296000.

The previous prime is 3998800087. The next prime is 3998800103. The reversal of 3998800100 is 10088993.

It can be written as a sum of positive squares in 6 ways, for example, as 677352676 + 3321447424 = 26026^2 + 57632^2 .

It is not an unprimeable number, because it can be changed into a prime (3998800103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321671 + ... + 333870.

It is an arithmetic number, because the mean of its divisors is an integer number (244990613).

Almost surely, 2^3998800100 is an apocalyptic number.

It is an amenable number.

3998800100 is an abundant number, since it is smaller than the sum of its proper divisors (4820861968).

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

3998800100 is a wasteful number, since it uses less digits than its factorization.

3998800100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655616 (or 655609 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 3998800100 is about 63236.0664494559. The cubic root of 3998800100 is about 1587.2423092173.

The spelling of 3998800100 in words is "three billion, nine hundred ninety-eight million, eight hundred thousand, one hundred".