3865471 has 4 divisors (see below), whose sum is σ = 3869944. Its totient is φ = 3861000.

The previous prime is 3865469. The next prime is 3865481. The reversal of 3865471 is 1745683.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1745683 = 157 ⋅11119.

It is a cyclic number.

It is not a de Polignac number, because 3865471 - 2¹ = 3865469 is a prime.

It is a super-4 number, since 4×3865471⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865481) 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, 480 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (967486).

Almost surely, 2^3865471 is an apocalyptic number.

3865471 is a deficient number, since it is larger than the sum of its proper divisors (4473).

3865471 is a wasteful number, since it uses less digits than its factorization.

3865471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4472.

The product of its digits is 20160, while the sum is 34.

The square root of 3865471 is about 1966.0801102702. The cubic root of 3865471 is about 156.9401776223.

The spelling of 3865471 in words is "three million, eight hundred sixty-five thousand, four hundred seventy-one".