6443369 has 8 divisors (see below), whose sum is σ = 6675912. Its totient is φ = 6215040.

The previous prime is 6443351. The next prime is 6443377. The reversal of 6443369 is 9633446.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 659344 + 5784025 = 812^2 + 2405^2 .

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 6443369 - 2¹² = 6439273 is a prime.

It is a super-2 number, since 2×6443369² = 83034008140322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6 + 4⁴ + 4⁸ + 3⁵ + 3¹³ + 6² + 9⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6443329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2237 + ... + 4229.

It is an arithmetic number, because the mean of its divisors is an integer number (834489).

Almost surely, 2^6443369 is an apocalyptic number.

It is an amenable number.

6443369 is a deficient number, since it is larger than the sum of its proper divisors (232543).

6443369 is a wasteful number, since it uses less digits than its factorization.

6443369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107.

The product of its digits is 46656, while the sum is 35.

The square root of 6443369 is about 2538.3792072896. The cubic root of 6443369 is about 186.0819868257.

The spelling of 6443369 in words is "six million, four hundred forty-three thousand, three hundred sixty-nine".