814739469 has 4 divisors (see below), whose sum is σ = 1086319296. Its totient is φ = 543159644.

The previous prime is 814739461. The next prime is 814739473. The reversal of 814739469 is 964937418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 814739469 - 2³ = 814739461 is a prime.

It is a super-2 number, since 2×814739469² = 1327600804692803922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814739461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135789909 + ... + 135789914.

It is an arithmetic number, because the mean of its divisors is an integer number (271579824).

Almost surely, 2^814739469 is an apocalyptic number.

It is an amenable number.

814739469 is a deficient number, since it is larger than the sum of its proper divisors (271579827).

814739469 is a wasteful number, since it uses less digits than its factorization.

814739469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271579826.

The product of its digits is 1306368, while the sum is 51.

The square root of 814739469 is about 28543.6414810725. The cubic root of 814739469 is about 933.9843199761.

The spelling of 814739469 in words is "eight hundred fourteen million, seven hundred thirty-nine thousand, four hundred sixty-nine".