3897667 has 4 divisors (see below), whose sum is σ = 3912016. Its totient is φ = 3883320.

The previous prime is 3897659. The next prime is 3897671. The reversal of 3897667 is 7667983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7667983 = 1433 ⋅5351.

It is a cyclic number.

It is not a de Polignac number, because 3897667 - 2³ = 3897659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3897637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6759 + ... + 7312.

It is an arithmetic number, because the mean of its divisors is an integer number (978004).

Almost surely, 2^3897667 is an apocalyptic number.

3897667 is a deficient number, since it is larger than the sum of its proper divisors (14349).

3897667 is a wasteful number, since it uses less digits than its factorization.

3897667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14348.

The product of its digits is 381024, while the sum is 46.

The square root of 3897667 is about 1974.2509972139. The cubic root of 3897667 is about 157.3746983587.

The spelling of 3897667 in words is "three million, eight hundred ninety-seven thousand, six hundred sixty-seven".