814926869289 has 81 divisors (see below), whose sum is σ = 1295389059237. Its totient is φ = 493455523392.

The previous prime is 814926869279. The next prime is 814926869291. The reversal of 814926869289 is 982968629418.

The square root of 814926869289 is 902733.

It is a perfect power (a square), and thus also a powerful number.

814926869289 is a `hidden beast` number, since 81 + 4 + 9 + 268 + 6 + 9 + 289 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20832014889 + 794094854400 = 144333^2 + 891120^2 .

It is not a de Polignac number, because 814926869289 - 2⁵ = 814926869257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (814926869209) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2781320227 + ... + 2781320519.

Almost surely, 2^814926869289 is an apocalyptic number.

814926869289 is the 902733-rd square number.

814926869289 is the 451367-th centered octagonal number.

It is an amenable number.

814926869289 is a deficient number, since it is larger than the sum of its proper divisors (480462189948).

814926869289 is an equidigital number, since it uses as much as digits as its factorization.

814926869289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 388 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 72.

The spelling of 814926869289 in words is "eight hundred fourteen billion, nine hundred twenty-six million, eight hundred sixty-nine thousand, two hundred eighty-nine".