3861539 has 8 divisors (see below), whose sum is σ = 4396032. Its totient is φ = 3357640.

The previous prime is 3861521. The next prime is 3861547. The reversal of 3861539 is 9351683.

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

It is not a de Polignac number, because 3861539 - 2¹² = 3857443 is a prime.

It is a super-2 number, since 2×3861539² = 29822966897042, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3 + 8⁷ + 6⁸ + 1 + 5⁷ + 3⁸ + 9² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3861499 and 3861508.

It is not an unprimeable number, because it can be changed into a prime (3861589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7379 + ... + 7884.

It is an arithmetic number, because the mean of its divisors is an integer number (549504).

Almost surely, 2^3861539 is an apocalyptic number.

3861539 is a deficient number, since it is larger than the sum of its proper divisors (534493).

3861539 is a wasteful number, since it uses less digits than its factorization.

3861539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15297.

The product of its digits is 19440, while the sum is 35.

The square root of 3861539 is about 1965.0798965945. The cubic root of 3861539 is about 156.8869458055.

The spelling of 3861539 in words is "three million, eight hundred sixty-one thousand, five hundred thirty-nine".