428247469 has 8 divisors (see below), whose sum is σ = 462587552. Its totient is φ = 394107120.

The previous prime is 428247461. The next prime is 428247481. The reversal of 428247469 is 964742824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428247469 - 2³ = 428247461 is a prime.

It is a super-2 number, since 2×428247469² = 366791789409811922, 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 (428247461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45459 + ... + 54064.

It is an arithmetic number, because the mean of its divisors is an integer number (57823444).

Almost surely, 2^428247469 is an apocalyptic number.

It is an amenable number.

428247469 is a deficient number, since it is larger than the sum of its proper divisors (34340083).

428247469 is a wasteful number, since it uses less digits than its factorization.

428247469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99867.

The product of its digits is 774144, while the sum is 46.

The square root of 428247469 is about 20694.1409340905. The cubic root of 428247469 is about 753.7574221946.

The spelling of 428247469 in words is "four hundred twenty-eight million, two hundred forty-seven thousand, four hundred sixty-nine".