6434291779 has 4 divisors (see below), whose sum is σ = 6434710576. Its totient is φ = 6433872984.

The previous prime is 6434291777. The next prime is 6434291807. The reversal of 6434291779 is 9771924346.

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

It is a cyclic number.

It is not a de Polignac number, because 6434291779 - 2¹ = 6434291777 is a prime.

It is a super-2 number, since 2×6434291779² = 82800221394613969682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6434291777) 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, 185439 + ... + 217384.

It is an arithmetic number, because the mean of its divisors is an integer number (1608677644).

Almost surely, 2^6434291779 is an apocalyptic number.

6434291779 is a deficient number, since it is larger than the sum of its proper divisors (418797).

6434291779 is a wasteful number, since it uses less digits than its factorization.

6434291779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418796.

The product of its digits is 2286144, while the sum is 52.

The square root of 6434291779 is about 80214.0372939799. The cubic root of 6434291779 is about 1859.9456355753.

The spelling of 6434291779 in words is "six billion, four hundred thirty-four million, two hundred ninety-one thousand, seven hundred seventy-nine".