3987474091 has 8 divisors (see below), whose sum is σ = 4028355504. Its totient is φ = 3946659840.

The previous prime is 3987474077. The next prime is 3987474119. The reversal of 3987474091 is 1904747893.

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

It is a cyclic number.

It is not a de Polignac number, because 3987474091 - 2¹⁵ = 3987441323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3987474191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107211 + ... + 139531.

It is an arithmetic number, because the mean of its divisors is an integer number (503544438).

Almost surely, 2^3987474091 is an apocalyptic number.

3987474091 is a deficient number, since it is larger than the sum of its proper divisors (40881413).

3987474091 is a wasteful number, since it uses less digits than its factorization.

3987474091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33581.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 3987474091 is about 63146.4495518157. The cubic root of 3987474091 is about 1585.7423492713.

The spelling of 3987474091 in words is "three billion, nine hundred eighty-seven million, four hundred seventy-four thousand, ninety-one".