3986257832 has 8 divisors (see below), whose sum is σ = 7474233450. Its totient is φ = 1993128912.

The previous prime is 3986257831. The next prime is 3986257861. The reversal of 3986257832 is 2387526893.

It can be written as a sum of positive squares in only one way, i.e., 3565761796 + 420496036 = 59714^2 + 20506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3986257831) by changing a digit.

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, 249141107 + ... + 249141122.

Almost surely, 2^3986257832 is an apocalyptic number.

It is an amenable number.

3986257832 is a deficient number, since it is larger than the sum of its proper divisors (3487975618).

3986257832 is a wasteful number, since it uses less digits than its factorization.

3986257832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498282235 (or 498282231 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The square root of 3986257832 is about 63136.8183550613. The cubic root of 3986257832 is about 1585.5811052115.

The spelling of 3986257832 in words is "three billion, nine hundred eighty-six million, two hundred fifty-seven thousand, eight hundred thirty-two".