6227399729 has 4 divisors (see below), whose sum is σ = 6228005376. Its totient is φ = 6226794084.

The previous prime is 6227399719. The next prime is 6227399771. The reversal of 6227399729 is 9279937226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6227399729 - 2⁴ = 6227399713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6227399719) 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, 287129 + ... + 308054.

It is an arithmetic number, because the mean of its divisors is an integer number (1557001344).

Almost surely, 2^6227399729 is an apocalyptic number.

It is an amenable number.

6227399729 is a deficient number, since it is larger than the sum of its proper divisors (605647).

6227399729 is a wasteful number, since it uses less digits than its factorization.

6227399729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605646.

The product of its digits is 5143824, while the sum is 56.

The square root of 6227399729 is about 78913.8753895663. The cubic root of 6227399729 is about 1839.7927981274.

The spelling of 6227399729 in words is "six billion, two hundred twenty-seven million, three hundred ninety-nine thousand, seven hundred twenty-nine".