428939179 has 2 divisors, whose sum is σ = 428939180. Its totient is φ = 428939178.

The previous prime is 428939177. The next prime is 428939221. The reversal of 428939179 is 971939824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428939179 - 2¹ = 428939177 is a prime.

Together with 428939177, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (428939177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214469589 + 214469590.

It is an arithmetic number, because the mean of its divisors is an integer number (214469590).

Almost surely, 2^428939179 is an apocalyptic number.

428939179 is a deficient number, since it is larger than the sum of its proper divisors (1).

428939179 is an equidigital number, since it uses as much as digits as its factorization.

428939179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 428939179 is about 20710.8468923895. The cubic root of 428939179 is about 754.1630296390.

The spelling of 428939179 in words is "four hundred twenty-eight million, nine hundred thirty-nine thousand, one hundred seventy-nine".