3861471 has 4 divisors (see below), whose sum is σ = 5148632. Its totient is φ = 2574312.

The previous prime is 3861463. The next prime is 3861521. The reversal of 3861471 is 1741683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1741683 = 3 ⋅580561.

It is not a de Polignac number, because 3861471 - 2³ = 3861463 is a prime.

It is a super-3 number, since 3×3861471³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a Duffinian number.

3861471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643576 + ... + 643581.

It is an arithmetic number, because the mean of its divisors is an integer number (1287158).

Almost surely, 2^3861471 is an apocalyptic number.

3861471 is a deficient number, since it is larger than the sum of its proper divisors (1287161).

3861471 is a wasteful number, since it uses less digits than its factorization.

3861471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287160.

The product of its digits is 4032, while the sum is 30.

The square root of 3861471 is about 1965.0625944229. The cubic root of 3861471 is about 156.8860248967.

The spelling of 3861471 in words is "three million, eight hundred sixty-one thousand, four hundred seventy-one".