814705489 has 8 divisors (see below), whose sum is σ = 877626792. Its totient is φ = 751820160.

The previous prime is 814705487. The next prime is 814705511. The reversal of 814705489 is 984507418.

814705489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 112190464 + 702515025 = 10592^2 + 26505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 814705489 - 2¹ = 814705487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814705483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54909 + ... + 68149.

It is an arithmetic number, because the mean of its divisors is an integer number (109703349).

Almost surely, 2^814705489 is an apocalyptic number.

It is an amenable number.

814705489 is a deficient number, since it is larger than the sum of its proper divisors (62921303).

814705489 is a wasteful number, since it uses less digits than its factorization.

814705489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17987.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 814705489 is about 28543.0462459773. The cubic root of 814705489 is about 933.9713353637.

The spelling of 814705489 in words is "eight hundred fourteen million, seven hundred five thousand, four hundred eighty-nine".