428975017 has 4 divisors (see below), whose sum is σ = 436245840. Its totient is φ = 421704196.

The previous prime is 428975011. The next prime is 428975021. The reversal of 428975017 is 710579824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428975017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428975011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3635323 + ... + 3635440.

It is an arithmetic number, because the mean of its divisors is an integer number (109061460).

Almost surely, 2^428975017 is an apocalyptic number.

It is an amenable number.

428975017 is a deficient number, since it is larger than the sum of its proper divisors (7270823).

428975017 is an equidigital number, since it uses as much as digits as its factorization.

428975017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270822.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 428975017 is about 20711.7120731242. The cubic root of 428975017 is about 754.1840325716.

The spelling of 428975017 in words is "four hundred twenty-eight million, nine hundred seventy-five thousand, seventeen".