814370769 has 6 divisors (see below), whose sum is σ = 1176313346. Its totient is φ = 542913840.

The previous prime is 814370749. The next prime is 814370783. The reversal of 814370769 is 967073418.

It can be written as a sum of positive squares in only one way, i.e., 691427025 + 122943744 = 26295^2 + 11088^2 .

It is not a de Polignac number, because 814370769 - 2²⁰ = 813322193 is a prime.

It is a super-2 number, since 2×814370769² = 1326399498803302722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814370749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45242812 + ... + 45242829.

Almost surely, 2^814370769 is an apocalyptic number.

It is an amenable number.

814370769 is a deficient number, since it is larger than the sum of its proper divisors (361942577).

814370769 is a wasteful number, since it uses less digits than its factorization.

814370769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90485647 (or 90485644 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 814370769 is about 28537.1822189928. The cubic root of 814370769 is about 933.8434111374.

The spelling of 814370769 in words is "eight hundred fourteen million, three hundred seventy thousand, seven hundred sixty-nine".