428212679 has 2 divisors, whose sum is σ = 428212680. Its totient is φ = 428212678.

The previous prime is 428212667. The next prime is 428212699. The reversal of 428212679 is 976212824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428212679 - 2⁴ = 428212663 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428212649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214106339 + 214106340.

It is an arithmetic number, because the mean of its divisors is an integer number (214106340).

Almost surely, 2^428212679 is an apocalyptic number.

428212679 is a deficient number, since it is larger than the sum of its proper divisors (1).

428212679 is an equidigital number, since it uses as much as digits as its factorization.

428212679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 428212679 is about 20693.3003409316. The cubic root of 428212679 is about 753.7370103745.

It can be divided in two parts, 4282 and 12679, that added together give a palindrome (16961).

The spelling of 428212679 in words is "four hundred twenty-eight million, two hundred twelve thousand, six hundred seventy-nine".