814398730 has 16 divisors (see below), whose sum is σ = 1469693160. Its totient is φ = 324920512.

The previous prime is 814398709. The next prime is 814398733. The reversal of 814398730 is 37893418.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 485012529 + 329386201 = 22023^2 + 18149^2 .

It is a super-2 number, since 2×814398730² = 1326490582851225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (814398733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100789 + ... + 108568.

Almost surely, 2^814398730 is an apocalyptic number.

814398730 is a deficient number, since it is larger than the sum of its proper divisors (655294430).

814398730 is a wasteful number, since it uses less digits than its factorization.

814398730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209753.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 814398730 is about 28537.6721194985. The cubic root of 814398730 is about 933.8540986923.

The spelling of 814398730 in words is "eight hundred fourteen million, three hundred ninety-eight thousand, seven hundred thirty".