3999854887 has 16 divisors (see below), whose sum is σ = 4739940352. Its totient is φ = 3302933760.

The previous prime is 3999854861. The next prime is 3999854891. The reversal of 3999854887 is 7884589993.

3999854887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3999854887 - 2¹¹ = 3999852839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999854897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7063 + ... + 89719.

It is an arithmetic number, because the mean of its divisors is an integer number (296246272).

Almost surely, 2^3999854887 is an apocalyptic number.

3999854887 is a deficient number, since it is larger than the sum of its proper divisors (740085465).

3999854887 is a wasteful number, since it uses less digits than its factorization.

3999854887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82918.

The product of its digits is 156764160, while the sum is 70.

The square root of 3999854887 is about 63244.4059739674. The cubic root of 3999854887 is about 1587.3818556920.

The spelling of 3999854887 in words is "three billion, nine hundred ninety-nine million, eight hundred fifty-four thousand, eight hundred eighty-seven".