3998400284 has 6 divisors (see below), whose sum is σ = 6997200504. Its totient is φ = 1999200140.

The previous prime is 3998400271. The next prime is 3998400313. The reversal of 3998400284 is 4820048993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499800032 + ... + 499800039.

It is an arithmetic number, because the mean of its divisors is an integer number (1166200084).

Almost surely, 2^3998400284 is an apocalyptic number.

It is an amenable number.

3998400284 is a deficient number, since it is larger than the sum of its proper divisors (2998800220).

3998400284 is a wasteful number, since it uses less digits than its factorization.

3998400284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999600075 (or 999600073 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 3998400284 is about 63232.9050732291. The cubic root of 3998400284 is about 1587.1894078464.

The spelling of 3998400284 in words is "three billion, nine hundred ninety-eight million, four hundred thousand, two hundred eighty-four".