428673432339 has 12 divisors (see below), whose sum is σ = 624070510336. Its totient is φ = 283532033232.

The previous prime is 428673432323. The next prime is 428673432379. The reversal of 428673432339 is 933234376824.

428673432339 is a `hidden beast` number, since 4 + 2 + 8 + 67 + 343 + 233 + 9 = 666.

It is not a de Polignac number, because 428673432339 - 2⁴ = 428673432323 is a prime.

It is a super-2 number, since 2×428673432339² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428673432379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187520044 + ... + 187522329.

Almost surely, 2^428673432339 is an apocalyptic number.

428673432339 is a deficient number, since it is larger than the sum of its proper divisors (195397077997).

428673432339 is a wasteful number, since it uses less digits than its factorization.

428673432339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375042506 (or 375042503 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 54.

The spelling of 428673432339 in words is "four hundred twenty-eight billion, six hundred seventy-three million, four hundred thirty-two thousand, three hundred thirty-nine".