3900844168487 has 24 divisors (see below), whose sum is σ = 4735335901536. Its totient is φ = 3197986649088.

The previous prime is 3900844168483. The next prime is 3900844168513. The reversal of 3900844168487 is 7848614480093.

It is not a de Polignac number, because 3900844168487 - 2² = 3900844168483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3900844168483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17326223 + ... + 17549919.

It is an arithmetic number, because the mean of its divisors is an integer number (197305662564).

Almost surely, 2^{3900844168487} is an apocalyptic number.

3900844168487 is a deficient number, since it is larger than the sum of its proper divisors (834491733049).

3900844168487 is a wasteful number, since it uses less digits than its factorization.

3900844168487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239207 (or 239200 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 3900844168487 in words is "three trillion, nine hundred billion, eight hundred forty-four million, one hundred sixty-eight thousand, four hundred eighty-seven".