3969365 has 8 divisors (see below), whose sum is σ = 4783320. Its totient is φ = 3162112.

The previous prime is 3969349. The next prime is 3969367. The reversal of 3969365 is 5639693.

3969365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2436721 + 1532644 = 1561^2 + 1238^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3969365 - 2⁴ = 3969349 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 9² + 6⁸ + 9⁶ + 3⁵ + 6⁸ + 5⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969367) 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 7 ways as a sum of consecutive naturals, for example, 260 + ... + 2829.

It is an arithmetic number, because the mean of its divisors is an integer number (597915).

Almost surely, 2^3969365 is an apocalyptic number.

It is an amenable number.

3969365 is a deficient number, since it is larger than the sum of its proper divisors (813955).

3969365 is a wasteful number, since it uses less digits than its factorization.

3969365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351.

The product of its digits is 131220, while the sum is 41.

The square root of 3969365 is about 1992.3265294625. The cubic root of 3969365 is about 158.3338159419. Note that the first 3 decimals are identical.

It can be divided in two parts, 3969 and 365, that added together give a palindrome (4334).

The spelling of 3969365 in words is "three million, nine hundred sixty-nine thousand, three hundred sixty-five".