3956369 has 4 divisors (see below), whose sum is σ = 3961140. Its totient is φ = 3951600.

The previous prime is 3956353. The next prime is 3956401. The reversal of 3956369 is 9636593.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1721344 + 2235025 = 1312^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 3956369 - 2⁴ = 3956353 is a prime.

It is a super-2 number, since 2×3956369² = 31305711328322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹⁰ + 9² + 5 + 6⁸ + 3¹² + 6⁸ + 9⁴ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3956269) 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, 782 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (990285).

Almost surely, 2^3956369 is an apocalyptic number.

It is an amenable number.

3956369 is a deficient number, since it is larger than the sum of its proper divisors (4771).

3956369 is a wasteful number, since it uses less digits than its factorization.

3956369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770.

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

The square root of 3956369 is about 1989.0623419089. The cubic root of 3956369 is about 158.1608280659.

The spelling of 3956369 in words is "three million, nine hundred fifty-six thousand, three hundred sixty-nine".