6413927569 has 27 divisors (see below), whose sum is σ = 7937598897. Its totient is φ = 5166572544.

The previous prime is 6413927567. The next prime is 6413927579. The reversal of 6413927569 is 9657293146.

It is a happy number.

The square root of 6413927569 is 80087.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 90497169 + 6323430400 = 9513^2 + 79520^2 .

It is not a de Polignac number, because 6413927569 - 2¹ = 6413927567 is a prime.

It is a super-2 number, since 2×6413927569² = 82276933720756499522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6413927567) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9530017 + ... + 9530689.

Almost surely, 2^6413927569 is an apocalyptic number.

6413927569 is the 80087-th square number.

6413927569 is the 40044-th centered octagonal number.

It is an amenable number.

6413927569 is a deficient number, since it is larger than the sum of its proper divisors (1523671328).

6413927569 is an frugal number, since it uses more digits than its factorization.

6413927569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 697 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 52.

The cubic root of 6413927569 is about 1857.9813503512.

The spelling of 6413927569 in words is "six billion, four hundred thirteen million, nine hundred twenty-seven thousand, five hundred sixty-nine".