3987956403 has 8 divisors (see below), whose sum is σ = 5908083600. Its totient is φ = 2658637584.

The previous prime is 3987956387. The next prime is 3987956449. The reversal of 3987956403 is 3046597893.

3987956403 is a `hidden beast` number, since 3 + 9 + 8 + 79 + 564 + 0 + 3 = 666.

It is not a de Polignac number, because 3987956403 - 2⁴ = 3987956387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3987956403.

It is not an unprimeable number, because it can be changed into a prime (3987956503) 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 in 7 ways as a sum of consecutive naturals, for example, 73851018 + ... + 73851071.

It is an arithmetic number, because the mean of its divisors is an integer number (738510450).

Almost surely, 2^3987956403 is an apocalyptic number.

3987956403 is a deficient number, since it is larger than the sum of its proper divisors (1920127197).

3987956403 is a wasteful number, since it uses less digits than its factorization.

3987956403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147702098 (or 147702092 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The square root of 3987956403 is about 63150.2684317335. The cubic root of 3987956403 is about 1585.8062821196.

The spelling of 3987956403 in words is "three billion, nine hundred eighty-seven million, nine hundred fifty-six thousand, four hundred three".