428617471 has 4 divisors (see below), whose sum is σ = 428694832. Its totient is φ = 428540112.

The previous prime is 428617463. The next prime is 428617493. The reversal of 428617471 is 174716824.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 428617471 - 2³ = 428617463 is a prime.

It is a super-3 number, since 3×428617471³ (a number of 27 digits) contains 333 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 (428617411) 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, 29670 + ... + 41683.

It is an arithmetic number, because the mean of its divisors is an integer number (107173708).

Almost surely, 2^428617471 is an apocalyptic number.

428617471 is a deficient number, since it is larger than the sum of its proper divisors (77361).

428617471 is an equidigital number, since it uses as much as digits as its factorization.

428617471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77360.

The product of its digits is 75264, while the sum is 40.

The square root of 428617471 is about 20703.0787807031. The cubic root of 428617471 is about 753.9744396066.

The spelling of 428617471 in words is "four hundred twenty-eight million, six hundred seventeen thousand, four hundred seventy-one".