3128469329 has 4 divisors (see below), whose sum is σ = 3128696676. Its totient is φ = 3128241984.

The previous prime is 3128469299. The next prime is 3128469347. The reversal of 3128469329 is 9239648213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2278630225 + 849839104 = 47735^2 + 29152^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128469329 - 2¹⁶ = 3128403793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128469389) 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, 91604 + ... + 121029.

It is an arithmetic number, because the mean of its divisors is an integer number (782174169).

Almost surely, 2^3128469329 is an apocalyptic number.

It is an amenable number.

3128469329 is a deficient number, since it is larger than the sum of its proper divisors (227347).

3128469329 is a wasteful number, since it uses less digits than its factorization.

3128469329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227346.

The product of its digits is 559872, while the sum is 47.

The square root of 3128469329 is about 55932.7214517585. The cubic root of 3128469329 is about 1462.5497025892.

The spelling of 3128469329 in words is "three billion, one hundred twenty-eight million, four hundred sixty-nine thousand, three hundred twenty-nine".