428495991427 has 16 divisors (see below), whose sum is σ = 494238628800. Its totient is φ = 363898009728.

The previous prime is 428495991421. The next prime is 428495991433. The reversal of 428495991427 is 724199594824.

It is an interprime number because it is at equal distance from previous prime (428495991421) and next prime (428495991433).

It is a cyclic number.

It is not a de Polignac number, because 428495991427 - 2¹¹ = 428495989379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428495991421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103348 + ... + 931489.

It is an arithmetic number, because the mean of its divisors is an integer number (30889914300).

Almost surely, 2^428495991427 is an apocalyptic number.

428495991427 is a deficient number, since it is larger than the sum of its proper divisors (65742637373).

428495991427 is a wasteful number, since it uses less digits than its factorization.

428495991427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035390.

The product of its digits is 52254720, while the sum is 64.

The spelling of 428495991427 in words is "four hundred twenty-eight billion, four hundred ninety-five million, nine hundred ninety-one thousand, four hundred twenty-seven".