3987466639 has 8 divisors (see below), whose sum is σ = 4301912160. Its totient is φ = 3674123616.

The previous prime is 3987466633. The next prime is 3987466649. The reversal of 3987466639 is 9366647893.

3987466639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3987466639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987466633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268099 + ... + 282580.

It is an arithmetic number, because the mean of its divisors is an integer number (537739020).

Almost surely, 2^3987466639 is an apocalyptic number.

3987466639 is a deficient number, since it is larger than the sum of its proper divisors (314445521).

3987466639 is a wasteful number, since it uses less digits than its factorization.

3987466639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551249.

The product of its digits is 35271936, while the sum is 61.

The square root of 3987466639 is about 63146.3905460953. The cubic root of 3987466639 is about 1585.7413614312.

The spelling of 3987466639 in words is "three billion, nine hundred eighty-seven million, four hundred sixty-six thousand, six hundred thirty-nine".