3897806 has 8 divisors (see below), whose sum is σ = 6378264. Its totient is φ = 1771720.

The previous prime is 3897799. The next prime is 3897823. The reversal of 3897806 is 6087983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3897806² = 30385783227272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88565 + ... + 88608.

It is an arithmetic number, because the mean of its divisors is an integer number (797283).

Almost surely, 2^3897806 is an apocalyptic number.

3897806 is a deficient number, since it is larger than the sum of its proper divisors (2480458).

3897806 is a wasteful number, since it uses less digits than its factorization.

3897806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177186.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 3897806 is about 1974.2862001240. The cubic root of 3897806 is about 157.3765691208.

The spelling of 3897806 in words is "three million, eight hundred ninety-seven thousand, eight hundred six".