6413447399 has 4 divisors (see below), whose sum is σ = 6413708664. Its totient is φ = 6413186136.

The previous prime is 6413447393. The next prime is 6413447413. The reversal of 6413447399 is 9937443146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9937443146 = 2 ⋅4968721573.

It is a cyclic number.

It is not a de Polignac number, because 6413447399 - 2⁸ = 6413447143 is a prime.

It is a super-2 number, since 2×6413447399² = 82264615079479730402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6413447393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89492 + ... + 144345.

It is an arithmetic number, because the mean of its divisors is an integer number (1603427166).

Almost surely, 2^6413447399 is an apocalyptic number.

6413447399 is a deficient number, since it is larger than the sum of its proper divisors (261265).

6413447399 is a wasteful number, since it uses less digits than its factorization.

6413447399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261264.

The product of its digits is 1959552, while the sum is 50.

The square root of 6413447399 is about 80084.0021415014. The cubic root of 6413447399 is about 1857.9349841084.

The spelling of 6413447399 in words is "six billion, four hundred thirteen million, four hundred forty-seven thousand, three hundred ninety-nine".