308639194447 has 8 divisors (see below), whose sum is σ = 324047329200. Its totient is φ = 293548753344.

The previous prime is 308639194411. The next prime is 308639194511. The reversal of 308639194447 is 744491936803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 308639194447 - 2⁷ = 308639194319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 308639194391 and 308639194400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308639194847) 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, 79421422 + ... + 79425307.

It is an arithmetic number, because the mean of its divisors is an integer number (40505916150).

Almost surely, 2^308639194447 is an apocalyptic number.

308639194447 is a deficient number, since it is larger than the sum of its proper divisors (15408134753).

308639194447 is a wasteful number, since it uses less digits than its factorization.

308639194447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158846825.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 308639194447 in words is "three hundred eight billion, six hundred thirty-nine million, one hundred ninety-four thousand, four hundred forty-seven".