309736706434 has 16 divisors (see below), whose sum is σ = 470875636728. Its totient is φ = 152788234752.

The previous prime is 309736706351. The next prime is 309736706443. The reversal of 309736706434 is 434607637903.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 268546786225 + 41189920209 = 518215^2 + 202953^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2456769 + ... + 2579764.

Almost surely, 2^309736706434 is an apocalyptic number.

309736706434 is a deficient number, since it is larger than the sum of its proper divisors (161138930294).

309736706434 is a wasteful number, since it uses less digits than its factorization.

309736706434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036949.

The product of its (nonzero) digits is 6858432, while the sum is 52.

The spelling of 309736706434 in words is "three hundred nine billion, seven hundred thirty-six million, seven hundred six thousand, four hundred thirty-four".