428309353 has 4 divisors (see below), whose sum is σ = 428426068. Its totient is φ = 428192640.

The previous prime is 428309341. The next prime is 428309363. The reversal of 428309353 is 353903824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 299532249 + 128777104 = 17307^2 + 11348^2 .

It is a cyclic number.

It is not a de Polignac number, because 428309353 - 2²¹ = 426212201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428309333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52668 + ... + 60253.

It is an arithmetic number, because the mean of its divisors is an integer number (107106517).

Almost surely, 2^428309353 is an apocalyptic number.

It is an amenable number.

428309353 is a deficient number, since it is larger than the sum of its proper divisors (116715).

428309353 is a wasteful number, since it uses less digits than its factorization.

428309353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116714.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 428309353 is about 20695.6360858998. The cubic root of 428309353 is about 753.7937277430.

The spelling of 428309353 in words is "four hundred twenty-eight million, three hundred nine thousand, three hundred fifty-three".