428019906229 has 4 divisors (see below), whose sum is σ = 428460710400. Its totient is φ = 427579102060.

The previous prime is 428019906221. The next prime is 428019906311. The reversal of 428019906229 is 922609910824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428019906229 - 2³ = 428019906221 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 (428019906221) 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, 220400629 + ... + 220402570.

It is an arithmetic number, because the mean of its divisors is an integer number (107115177600).

Almost surely, 2^428019906229 is an apocalyptic number.

It is an amenable number.

428019906229 is a deficient number, since it is larger than the sum of its proper divisors (440804171).

428019906229 is an equidigital number, since it uses as much as digits as its factorization.

428019906229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440804170.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 428019906229 in words is "four hundred twenty-eight billion, nineteen million, nine hundred six thousand, two hundred twenty-nine".