3998851392 has 112 divisors (see below), whose sum is σ = 11297594880. Its totient is φ = 1245285888.

The previous prime is 3998851343. The next prime is 3998851399. The reversal of 3998851392 is 2931588993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998851399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179359 + ... + 200417.

Almost surely, 2^3998851392 is an apocalyptic number.

3998851392 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3998851392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5648797440).

3998851392 is an abundant number, since it is smaller than the sum of its proper divisors (7298743488).

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

3998851392 is a wasteful number, since it uses less digits than its factorization.

3998851392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21140 (or 21130 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 57.

The square root of 3998851392 is about 63236.4720078532. The cubic root of 3998851392 is about 1587.2490956268.

The spelling of 3998851392 in words is "three billion, nine hundred ninety-eight million, eight hundred fifty-one thousand, three hundred ninety-two".