3947587 has 16 divisors (see below), whose sum is σ = 4881600. Its totient is φ = 3179904.

The previous prime is 3947579. The next prime is 3947591. The reversal of 3947587 is 7857493.

It is a happy number.

3947587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3947587 - 2³ = 3947579 is a prime.

It is a Duffinian number.

3947587 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3947507) 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 in 15 ways as a sum of consecutive naturals, for example, 5493 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (305100).

Almost surely, 2^3947587 is an apocalyptic number.

3947587 is a deficient number, since it is larger than the sum of its proper divisors (934013).

3947587 is an equidigital number, since it uses as much as digits as its factorization.

3947587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 701 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 3947587 is about 1986.8535426649. The cubic root of 3947587 is about 158.0437175399.

The spelling of 3947587 in words is "three million, nine hundred forty-seven thousand, five hundred eighty-seven".