814140287 has 4 divisors (see below), whose sum is σ = 842214120. Its totient is φ = 786066456.

The previous prime is 814140281. The next prime is 814140289. The reversal of 814140287 is 782041418.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 814140287 - 2¹⁴ = 814123903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814140281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14036873 + ... + 14036930.

It is an arithmetic number, because the mean of its divisors is an integer number (210553530).

Almost surely, 2^814140287 is an apocalyptic number.

814140287 is a deficient number, since it is larger than the sum of its proper divisors (28073833).

814140287 is a wasteful number, since it uses less digits than its factorization.

814140287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28073832.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 814140287 is about 28533.1436578587. The cubic root of 814140287 is about 933.7553045020.

The spelling of 814140287 in words is "eight hundred fourteen million, one hundred forty thousand, two hundred eighty-seven".