3887749 has 2 divisors, whose sum is σ = 3887750. Its totient is φ = 3887748.

The previous prime is 3887731. The next prime is 3887753. The reversal of 3887749 is 9477883.

3887749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3045025 + 842724 = 1745^2 + 918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3887749 is a prime.

It is a super-2 number, since 2×3887749² = 30229184574002, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3887699 and 3887708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3887789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943874 + 1943875.

It is an arithmetic number, because the mean of its divisors is an integer number (1943875).

Almost surely, 2^3887749 is an apocalyptic number.

It is an amenable number.

3887749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887749 is an equidigital number, since it uses as much as digits as its factorization.

3887749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 46.

The square root of 3887749 is about 1971.7375586015. The cubic root of 3887749 is about 157.2410998035.

The spelling of 3887749 in words is "three million, eight hundred eighty-seven thousand, seven hundred forty-nine".