3969613 has 4 divisors (see below), whose sum is σ = 4178560. Its totient is φ = 3760668.

The previous prime is 3969611. The next prime is 3969629. The reversal of 3969613 is 3169693.

3969613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3969613 - 2¹ = 3969611 is a prime.

It is a Duffinian number.

3969613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104445 + ... + 104482.

It is an arithmetic number, because the mean of its divisors is an integer number (1044640).

Almost surely, 2^3969613 is an apocalyptic number.

It is an amenable number.

3969613 is a deficient number, since it is larger than the sum of its proper divisors (208947).

3969613 is a wasteful number, since it uses less digits than its factorization.

3969613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208946.

The product of its digits is 26244, while the sum is 37.

The square root of 3969613 is about 1992.3887672841. The cubic root of 3969613 is about 158.3371133600.

The spelling of 3969613 in words is "three million, nine hundred sixty-nine thousand, six hundred thirteen".