3887449 has 2 divisors, whose sum is σ = 3887450. Its totient is φ = 3887448.

The previous prime is 3887399. The next prime is 3887453. The reversal of 3887449 is 9447883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 57600 = 1957^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887449 - 2⁹ = 3886937 is a prime.

It is a super-2 number, since 2×3887449² = 30224519455202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3887489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943724 + 1943725.

It is an arithmetic number, because the mean of its divisors is an integer number (1943725).

Almost surely, 2^3887449 is an apocalyptic number.

It is an amenable number.

3887449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887449 is an equidigital number, since it uses as much as digits as its factorization.

3887449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 3887449 is about 1971.6614821008. The cubic root of 3887449 is about 157.2370551714.

The spelling of 3887449 in words is "three million, eight hundred eighty-seven thousand, four hundred forty-nine".