309386339494 has 32 divisors (see below), whose sum is σ = 485474109120. Its totient is φ = 147595886592.

The previous prime is 309386339489. The next prime is 309386339503. The reversal of 309386339494 is 494933683903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38976294 + ... + 38984230.

It is an arithmetic number, because the mean of its divisors is an integer number (15171065910).

Almost surely, 2^309386339494 is an apocalyptic number.

309386339494 is a deficient number, since it is larger than the sum of its proper divisors (176087769626).

309386339494 is a wasteful number, since it uses less digits than its factorization.

309386339494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9984.

The product of its (nonzero) digits is 45349632, while the sum is 61.

The spelling of 309386339494 in words is "three hundred nine billion, three hundred eighty-six million, three hundred thirty-nine thousand, four hundred ninety-four".