12309434 has 16 divisors (see below), whose sum is σ = 18912480. Its totient is φ = 6006960.

The previous prime is 12309433. The next prime is 12309457. The reversal of 12309434 is 43490321.

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

It is not an unprimeable number, because it can be changed into a prime (12309431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19577 + ... + 20195.

It is an arithmetic number, because the mean of its divisors is an integer number (1182030).

Almost surely, 2^12309434 is an apocalyptic number.

12309434 is a deficient number, since it is larger than the sum of its proper divisors (6603046).

12309434 is a wasteful number, since it uses less digits than its factorization.

12309434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 12309434 is about 3508.4802977928. The cubic root of 12309434 is about 230.8940250890.

Adding to 12309434 its reverse (43490321), we get a palindrome (55799755).

The spelling of 12309434 in words is "twelve million, three hundred nine thousand, four hundred thirty-four".