3887999 has 2 divisors, whose sum is σ = 3888000. Its totient is φ = 3887998.

The previous prime is 3887993. The next prime is 3888007. The reversal of 3887999 is 9997883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3887999 - 2¹² = 3883903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3887999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3887993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943999 + 1944000.

It is an arithmetic number, because the mean of its divisors is an integer number (1944000).

Almost surely, 2^3887999 is an apocalyptic number.

3887999 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887999 is an equidigital number, since it uses as much as digits as its factorization.

3887999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 3887999 is about 1971.8009534433. The cubic root of 3887999 is about 157.2444701714.

The spelling of 3887999 in words is "three million, eight hundred eighty-seven thousand, nine hundred ninety-nine".