814387 has 4 divisors (see below), whose sum is σ = 930736. Its totient is φ = 698040.

The previous prime is 814381. The next prime is 814393. The reversal of 814387 is 783418.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (814381) and next prime (814393).

It is not a de Polignac number, because 814387 - 2³ = 814379 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 12 and base 15.

It is not an unprimeable number, because it can be changed into a prime (814381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58164 + ... + 58177.

It is an arithmetic number, because the mean of its divisors is an integer number (232684).

2⁸¹⁴³⁸⁷ is an apocalyptic number.

814387 is a deficient number, since it is larger than the sum of its proper divisors (116349).

814387 is a wasteful number, since it uses less digits than its factorization.

814387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116348.

The product of its digits is 5376, while the sum is 31.

The square root of 814387 is about 902.4339310997. The cubic root of 814387 is about 93.3849615155.

Adding to 814387 its sum of digits (31), we get a palindrome (814418).

The spelling of 814387 in words is "eight hundred fourteen thousand, three hundred eighty-seven".