428397683338 has 4 divisors (see below), whose sum is σ = 642596525010. Its totient is φ = 214198841668.

The previous prime is 428397683227. The next prime is 428397683381. The reversal of 428397683338 is 833386793824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 270767244609 + 157630438729 = 520353^2 + 397027^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 428397683338.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107099420833 + ... + 107099420836.

Almost surely, 2^428397683338 is an apocalyptic number.

428397683338 is a deficient number, since it is larger than the sum of its proper divisors (214198841672).

428397683338 is a wasteful number, since it uses less digits than its factorization.

428397683338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214198841671.

The product of its digits is 125411328, while the sum is 64.

The spelling of 428397683338 in words is "four hundred twenty-eight billion, three hundred ninety-seven million, six hundred eighty-three thousand, three hundred thirty-eight".