6429811291 has 4 divisors (see below), whose sum is σ = 6430055184. Its totient is φ = 6429567400.

The previous prime is 6429811279. The next prime is 6429811301. The reversal of 6429811291 is 1921189246.

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 6429811291 - 2⁵ = 6429811259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6429811691) 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, 76840 + ... + 136981.

It is an arithmetic number, because the mean of its divisors is an integer number (1607513796).

Almost surely, 2^6429811291 is an apocalyptic number.

6429811291 is a deficient number, since it is larger than the sum of its proper divisors (243893).

6429811291 is a wasteful number, since it uses less digits than its factorization.

6429811291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243892.

The product of its digits is 62208, while the sum is 43.

The square root of 6429811291 is about 80186.1041016459. The cubic root of 6429811291 is about 1859.5138139411.

The spelling of 6429811291 in words is "six billion, four hundred twenty-nine million, eight hundred eleven thousand, two hundred ninety-one".