814139 has 2 divisors, whose sum is σ = 814140. Its totient is φ = 814138.

The previous prime is 814129. The next prime is 814171. The reversal of 814139 is 931418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 814139 - 2¹⁶ = 748603 is a prime.

It is a super-2 number, since 2×814139² = 1325644622642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 814139.

It is not a weakly prime, because it can be changed into another prime (814129) 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 as a sum of consecutive naturals, namely, 407069 + 407070.

It is an arithmetic number, because the mean of its divisors is an integer number (407070).

2⁸¹⁴¹³⁹ is an apocalyptic number.

814139 is a deficient number, since it is larger than the sum of its proper divisors (1).

814139 is an equidigital number, since it uses as much as digits as its factorization.

814139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 814139 is about 902.2965144563. The cubic root of 814139 is about 93.3754812472.

The spelling of 814139 in words is "eight hundred fourteen thousand, one hundred thirty-nine".