2100003998 has 4 divisors (see below), whose sum is σ = 3150006000. Its totient is φ = 1050001998.

The previous prime is 2100003977. The next prime is 2100004003. The reversal of 2100003998 is 8993000012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 525000998 + ... + 525001001.

It is an arithmetic number, because the mean of its divisors is an integer number (787501500).

Almost surely, 2^2100003998 is an apocalyptic number.

2100003998 is a deficient number, since it is larger than the sum of its proper divisors (1050002002).

2100003998 is a wasteful number, since it uses less digits than its factorization.

2100003998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050002001.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2100003998 is about 45825.8005712939. The cubic root of 2100003998 is about 1280.5799776466.

The spelling of 2100003998 in words is "two billion, one hundred million, three thousand, nine hundred ninety-eight".