814879129 has 4 divisors (see below), whose sum is σ = 815351076. Its totient is φ = 814407184.

The previous prime is 814879127. The next prime is 814879133. The reversal of 814879129 is 921978418.

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 471888729 + 342990400 = 21723^2 + 18520^2 .

It is a cyclic number.

It is not a de Polignac number, because 814879129 - 2¹ = 814879127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814879123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233374 + ... + 236839.

It is an arithmetic number, because the mean of its divisors is an integer number (203837769).

Almost surely, 2^814879129 is an apocalyptic number.

It is an amenable number.

814879129 is a deficient number, since it is larger than the sum of its proper divisors (471947).

814879129 is a wasteful number, since it uses less digits than its factorization.

814879129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471946.

The product of its digits is 290304, while the sum is 49.

The square root of 814879129 is about 28546.0878055120. The cubic root of 814879129 is about 934.0376837824.

The spelling of 814879129 in words is "eight hundred fourteen million, eight hundred seventy-nine thousand, one hundred twenty-nine".