428469967 has 16 divisors (see below), whose sum is σ = 466699968. Its totient is φ = 392254720.

The previous prime is 428469959. The next prime is 428470033. The reversal of 428469967 is 769964824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 428469967 - 2³ = 428469959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428469367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45693 + ... + 54265.

It is an arithmetic number, because the mean of its divisors is an integer number (29168748).

Almost surely, 2^428469967 is an apocalyptic number.

428469967 is a deficient number, since it is larger than the sum of its proper divisors (38230001).

428469967 is a wasteful number, since it uses less digits than its factorization.

428469967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8690.

The product of its digits is 5225472, while the sum is 55.

The square root of 428469967 is about 20699.5161054552. The cubic root of 428469967 is about 753.8879390061.

The spelling of 428469967 in words is "four hundred twenty-eight million, four hundred sixty-nine thousand, nine hundred sixty-seven".