428944440475 has 12 divisors (see below), whose sum is σ = 531904469080. Its totient is φ = 343146931200.

The previous prime is 428944440473. The next prime is 428944440497. The reversal of 428944440475 is 574044449824.

It is a happy number.

It is not a de Polignac number, because 428944440475 - 2¹ = 428944440473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428944440473) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 915931 + ... + 1302619.

Almost surely, 2^428944440475 is an apocalyptic number.

428944440475 is a deficient number, since it is larger than the sum of its proper divisors (102960028605).

428944440475 is a wasteful number, since it uses less digits than its factorization.

428944440475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431070 (or 431065 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 55.

The spelling of 428944440475 in words is "four hundred twenty-eight billion, nine hundred forty-four million, four hundred forty thousand, four hundred seventy-five".