4097865 has 16 divisors (see below), whose sum is σ = 6588288. Its totient is φ = 2174976.

The previous prime is 4097843. The next prime is 4097869. The reversal of 4097865 is 5687904.

It is not a de Polignac number, because 4097865 - 2¹⁴ = 4081481 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4097869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3324 + ... + 4386.

It is an arithmetic number, because the mean of its divisors is an integer number (411768).

Almost surely, 2^4097865 is an apocalyptic number.

It is an amenable number.

4097865 is a deficient number, since it is larger than the sum of its proper divisors (2490423).

4097865 is a wasteful number, since it uses less digits than its factorization.

4097865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 4097865 is about 2024.3184038090. The cubic root of 4097865 is about 160.0242801694.

Adding to 4097865 its sum of digits (39), we get a palindrome (4097904).

The spelling of 4097865 in words is "four million, ninety-seven thousand, eight hundred sixty-five".