3871539 has 18 divisors (see below), whose sum is σ = 6505980. Its totient is φ = 2212056.

The previous prime is 3871537. The next prime is 3871547. The reversal of 3871539 is 9351783.

It is not a de Polignac number, because 3871539 - 2¹ = 3871537 is a prime.

3871539 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3871537) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3949 + ... + 4830.

Almost surely, 2^3871539 is an apocalyptic number.

3871539 is a deficient number, since it is larger than the sum of its proper divisors (2634441).

3871539 is a wasteful number, since it uses less digits than its factorization.

3871539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8799 (or 8789 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 3871539 is about 1967.6226772428. The cubic root of 3871539 is about 157.0222560305.

The spelling of 3871539 in words is "three million, eight hundred seventy-one thousand, five hundred thirty-nine".