3988446381 has 48 divisors (see below), whose sum is σ = 6258155904. Its totient is φ = 2437972992.

The previous prime is 3988446373. The next prime is 3988446383. The reversal of 3988446381 is 1836448893.

It is not a de Polignac number, because 3988446381 - 2³ = 3988446373 is a prime.

It is a super-2 number, since 2×3988446381² = 31815409068223994322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988446383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4256145 + ... + 4257081.

It is an arithmetic number, because the mean of its divisors is an integer number (130378248).

Almost surely, 2^3988446381 is an apocalyptic number.

It is an amenable number.

3988446381 is a deficient number, since it is larger than the sum of its proper divisors (2269709523).

3988446381 is a wasteful number, since it uses less digits than its factorization.

3988446381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1647 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 3988446381 is about 63154.1477735232. The cubic root of 3988446381 is about 1585.8712258562.

The spelling of 3988446381 in words is "three billion, nine hundred eighty-eight million, four hundred forty-six thousand, three hundred eighty-one".