428887772869 has 8 divisors (see below), whose sum is σ = 429754701440. Its totient is φ = 428021024256.

The previous prime is 428887772851. The next prime is 428887772899. The reversal of 428887772869 is 968277788824.

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 428887772869 - 2¹¹ = 428887770821 is a prime.

It is a super-2 number, since 2×428887772869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428887772795 and 428887772804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428887772849) 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, 5383444 + ... + 5462530.

It is an arithmetic number, because the mean of its divisors is an integer number (53719337680).

Almost surely, 2^428887772869 is an apocalyptic number.

It is an amenable number.

428887772869 is a deficient number, since it is larger than the sum of its proper divisors (866928571).

428887772869 is a wasteful number, since it uses less digits than its factorization.

428887772869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89979.

The product of its digits is 1213857792, while the sum is 76.

The spelling of 428887772869 in words is "four hundred twenty-eight billion, eight hundred eighty-seven million, seven hundred seventy-two thousand, eight hundred sixty-nine".