428419317 has 4 divisors (see below), whose sum is σ = 571225760. Its totient is φ = 285612876.

The previous prime is 428419279. The next prime is 428419319. The reversal of 428419317 is 713914824.

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 not a de Polignac number, because 428419317 - 2¹⁶ = 428353781 is a prime.

It is a super-2 number, since 2×428419317² = 367086222357492978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428419319) 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, 71403217 + ... + 71403222.

It is an arithmetic number, because the mean of its divisors is an integer number (142806440).

Almost surely, 2^428419317 is an apocalyptic number.

It is an amenable number.

428419317 is a deficient number, since it is larger than the sum of its proper divisors (142806443).

428419317 is a wasteful number, since it uses less digits than its factorization.

428419317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142806442.

The product of its digits is 48384, while the sum is 39.

The square root of 428419317 is about 20698.2926107445. The cubic root of 428419317 is about 753.8582318062.

The spelling of 428419317 in words is "four hundred twenty-eight million, four hundred nineteen thousand, three hundred seventeen".