428088847 has 4 divisors (see below), whose sum is σ = 428153040. Its totient is φ = 428024656.

The previous prime is 428088841. The next prime is 428088877. The reversal of 428088847 is 748880824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428088847 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428088847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428088841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20758 + ... + 35875.

It is an arithmetic number, because the mean of its divisors is an integer number (107038260).

Almost surely, 2^428088847 is an apocalyptic number.

428088847 is a deficient number, since it is larger than the sum of its proper divisors (64193).

428088847 is an equidigital number, since it uses as much as digits as its factorization.

428088847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64192.

The product of its (nonzero) digits is 917504, while the sum is 49.

The square root of 428088847 is about 20690.3080450727. The cubic root of 428088847 is about 753.6643472917.

The spelling of 428088847 in words is "four hundred twenty-eight million, eighty-eight thousand, eight hundred forty-seven".