428480979209 has 2 divisors, whose sum is σ = 428480979210. Its totient is φ = 428480979208.

The previous prime is 428480979197. The next prime is 428480979281. The reversal of 428480979209 is 902979084824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248399569609 + 180081409600 = 498397^2 + 424360^2 .

It is a cyclic number.

It is not a de Polignac number, because 428480979209 - 2²⁰ = 428479930633 is a prime.

It is a super-3 number, since 3×428480979209³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (428480909209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214240489604 + 214240489605.

It is an arithmetic number, because the mean of its divisors is an integer number (214240489605).

Almost surely, 2^428480979209 is an apocalyptic number.

It is an amenable number.

428480979209 is a deficient number, since it is larger than the sum of its proper divisors (1).

428480979209 is an equidigital number, since it uses as much as digits as its factorization.

428480979209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 428480979209 in words is "four hundred twenty-eight billion, four hundred eighty million, nine hundred seventy-nine thousand, two hundred nine".