2629427789 has 4 divisors (see below), whose sum is σ = 2629532124. Its totient is φ = 2629323456.

The previous prime is 2629427783. The next prime is 2629427809. The reversal of 2629427789 is 9877249262.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1422421225 + 1207006564 = 37715^2 + 34742^2 .

It is a cyclic number.

It is not a de Polignac number, because 2629427789 - 2²⁰ = 2628379213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2629427783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11699 + ... + 73455.

It is an arithmetic number, because the mean of its divisors is an integer number (657383031).

Almost surely, 2^2629427789 is an apocalyptic number.

It is an amenable number.

2629427789 is a deficient number, since it is larger than the sum of its proper divisors (104335).

2629427789 is an equidigital number, since it uses as much as digits as its factorization.

2629427789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104334.

The product of its digits is 6096384, while the sum is 56.

The square root of 2629427789 is about 51277.9464194891. The cubic root of 2629427789 is about 1380.2372673672.

The spelling of 2629427789 in words is "two billion, six hundred twenty-nine million, four hundred twenty-seven thousand, seven hundred eighty-nine".