6398353369 has 4 divisors (see below), whose sum is σ = 6413551780. Its totient is φ = 6383154960.

The previous prime is 6398353361. The next prime is 6398353373. The reversal of 6398353369 is 9633538936.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12425625 + 6385927744 = 3525^2 + 79912^2 .

It is a cyclic number.

It is not a de Polignac number, because 6398353369 - 2³ = 6398353361 is a prime.

It is a super-2 number, since 2×6398353369² = 81877851669187300322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6398353361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7598574 + ... + 7599415.

It is an arithmetic number, because the mean of its divisors is an integer number (1603387945).

Almost surely, 2^6398353369 is an apocalyptic number.

It is an amenable number.

6398353369 is a deficient number, since it is larger than the sum of its proper divisors (15198411).

6398353369 is a wasteful number, since it uses less digits than its factorization.

6398353369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15198410.

The product of its digits is 9447840, while the sum is 55.

The square root of 6398353369 is about 79989.7078942035. The cubic root of 6398353369 is about 1856.4762909527.

It can be divided in two parts, 639835 and 3369, that added together give a square (643204 = 802²).

The spelling of 6398353369 in words is "six billion, three hundred ninety-eight million, three hundred fifty-three thousand, three hundred sixty-nine".