814305986 has 16 divisors (see below), whose sum is σ = 1322241144. Its totient is φ = 373883904.

The previous prime is 814305959. The next prime is 814306013. The reversal of 814305986 is 689503418.

It is an interprime number because it is at equal distance from previous prime (814305959) and next prime (814306013).

It can be written as a sum of positive squares in 4 ways, for example, as 246961225 + 567344761 = 15715^2 + 23819^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 76121 + ... + 86156.

Almost surely, 2^814305986 is an apocalyptic number.

814305986 is a deficient number, since it is larger than the sum of its proper divisors (507935158).

814305986 is a wasteful number, since it uses less digits than its factorization.

814305986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162485.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 814305986 is about 28536.0471334065. The cubic root of 814305986 is about 933.8186481407.

The spelling of 814305986 in words is "eight hundred fourteen million, three hundred five thousand, nine hundred eighty-six".