3968529 has 4 divisors (see below), whose sum is σ = 5291376. Its totient is φ = 2645684.

The previous prime is 3968521. The next prime is 3968533. The reversal of 3968529 is 9258693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3968529 - 2³ = 3968521 is a prime.

It is a D-number.

3968529 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3968521) 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, 661419 + ... + 661424.

It is an arithmetic number, because the mean of its divisors is an integer number (1322844).

Almost surely, 2^3968529 is an apocalyptic number.

It is an amenable number.

3968529 is a deficient number, since it is larger than the sum of its proper divisors (1322847).

3968529 is a wasteful number, since it uses less digits than its factorization.

3968529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322846.

The product of its digits is 116640, while the sum is 42.

The square root of 3968529 is about 1992.1167134483. The cubic root of 3968529 is about 158.3226994397.

The spelling of 3968529 in words is "three million, nine hundred sixty-eight thousand, five hundred twenty-nine".