3984400220 has 24 divisors (see below), whose sum is σ = 8492127504. Its totient is φ = 1569972096.

The previous prime is 3984400183. The next prime is 3984400243. The reversal of 3984400220 is 220044893.

It is a super-2 number, since 2×3984400220² = 31750890226272096800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485377 + ... + 1488056.

It is an arithmetic number, because the mean of its divisors is an integer number (353838646).

Almost surely, 2^3984400220 is an apocalyptic number.

It is an amenable number.

3984400220 is an abundant number, since it is smaller than the sum of its proper divisors (4507727284).

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

3984400220 is a wasteful number, since it uses less digits than its factorization.

3984400220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973509 (or 2973507 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 3984400220 is about 63122.1056366151. The cubic root of 3984400220 is about 1585.3347712434.

The spelling of 3984400220 in words is "three billion, nine hundred eighty-four million, four hundred thousand, two hundred twenty".