428669411 has 4 divisors (see below), whose sum is σ = 430217232. Its totient is φ = 427121592.

The previous prime is 428669407. The next prime is 428669413. The reversal of 428669411 is 114966824.

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 428669411 - 2² = 428669407 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (428669413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773495 + ... + 774048.

It is an arithmetic number, because the mean of its divisors is an integer number (107554308).

Almost surely, 2^428669411 is an apocalyptic number.

428669411 is a deficient number, since it is larger than the sum of its proper divisors (1547821).

428669411 is a wasteful number, since it uses less digits than its factorization.

428669411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547820.

The product of its digits is 82944, while the sum is 41.

The square root of 428669411 is about 20704.3331455036. Note that the first 3 decimals coincide. The cubic root of 428669411 is about 754.0048939964.

The spelling of 428669411 in words is "four hundred twenty-eight million, six hundred sixty-nine thousand, four hundred eleven".