3897539 has 4 divisors (see below), whose sum is σ = 4126824. Its totient is φ = 3668256.

The previous prime is 3897521. The next prime is 3897559. The reversal of 3897539 is 9357983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9357983 = 1087 ⋅8609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3897539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3897539.

It is not an unprimeable number, because it can be changed into a prime (3897559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114617 + ... + 114650.

It is an arithmetic number, because the mean of its divisors is an integer number (1031706).

Almost surely, 2^3897539 is an apocalyptic number.

3897539 is a deficient number, since it is larger than the sum of its proper divisors (229285).

3897539 is a wasteful number, since it uses less digits than its factorization.

3897539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229284.

The product of its digits is 204120, while the sum is 44.

The square root of 3897539 is about 1974.2185795904. The cubic root of 3897539 is about 157.3729756032.

The spelling of 3897539 in words is "three million, eight hundred ninety-seven thousand, five hundred thirty-nine".