3984744992 has 18 divisors (see below), whose sum is σ = 7845669783. Its totient is φ = 1992193952.

The previous prime is 3984744989. The next prime is 3984745001. The reversal of 3984744992 is 2994474893.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1992372496 + 1992372496 = 44636^2 + 44636^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=44636.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 351509 + ... + 362667.

Almost surely, 2^3984744992 is an apocalyptic number.

3984744992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3984744992 is a deficient number, since it is larger than the sum of its proper divisors (3860924791).

3984744992 is an frugal number, since it uses more digits than its factorization.

3984744992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22328 (or 11161 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 59.

The square root of 3984744992 is about 63124.8365700855. The cubic root of 3984744992 is about 1585.3804965091.

The spelling of 3984744992 in words is "three billion, nine hundred eighty-four million, seven hundred forty-four thousand, nine hundred ninety-two".