3897887 has 4 divisors (see below), whose sum is σ = 4454736. Its totient is φ = 3341040.

The previous prime is 3897877. The next prime is 3897889. The reversal of 3897887 is 7887983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3897887 - 2⁴ = 3897871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278414 + ... + 278427.

It is an arithmetic number, because the mean of its divisors is an integer number (1113684).

Almost surely, 2^3897887 is an apocalyptic number.

3897887 is a deficient number, since it is larger than the sum of its proper divisors (556849).

3897887 is an equidigital number, since it uses as much as digits as its factorization.

3897887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556848.

The product of its digits is 677376, while the sum is 50.

The square root of 3897887 is about 1974.3067137606. The cubic root of 3897887 is about 157.3776592566.

The spelling of 3897887 in words is "three million, eight hundred ninety-seven thousand, eight hundred eighty-seven".