3904933987 has 4 divisors (see below), whose sum is σ = 3929806336. Its totient is φ = 3880061640.

The previous prime is 3904933973. The next prime is 3904934023. The reversal of 3904933987 is 7893394093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3904933987 - 2¹¹ = 3904931939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3904933937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12435939 + ... + 12436252.

It is an arithmetic number, because the mean of its divisors is an integer number (982451584).

Almost surely, 2^3904933987 is an apocalyptic number.

3904933987 is a deficient number, since it is larger than the sum of its proper divisors (24872349).

3904933987 is a wasteful number, since it uses less digits than its factorization.

3904933987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24872348.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The square root of 3904933987 is about 62489.4710091228. The cubic root of 3904933987 is about 1574.7244314388.

The spelling of 3904933987 in words is "three billion, nine hundred four million, nine hundred thirty-three thousand, nine hundred eighty-seven".