3897893 has 4 divisors (see below), whose sum is σ = 3936588. Its totient is φ = 3859200.

The previous prime is 3897889. The next prime is 3897899. The reversal of 3897893 is 3987983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3987983 = 109 ⋅36587.

It can be written as a sum of positive squares in 2 ways, for example, as 3323329 + 574564 = 1823^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897893 - 2² = 3897889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897899) 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, 19196 + ... + 19397.

It is an arithmetic number, because the mean of its divisors is an integer number (984147).

Almost surely, 2^3897893 is an apocalyptic number.

It is an amenable number.

3897893 is a deficient number, since it is larger than the sum of its proper divisors (38695).

3897893 is a wasteful number, since it uses less digits than its factorization.

3897893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38694.

The product of its digits is 326592, while the sum is 47.

The square root of 3897893 is about 1974.3082332807. The cubic root of 3897893 is about 157.3777400068.

The spelling of 3897893 in words is "three million, eight hundred ninety-seven thousand, eight hundred ninety-three".