428614873 has 2 divisors, whose sum is σ = 428614874. Its totient is φ = 428614872.

The previous prime is 428614871. The next prime is 428614883. The reversal of 428614873 is 378416824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425885769 + 2729104 = 20637^2 + 1652^2 .

It is a cyclic number.

It is not a de Polignac number, because 428614873 - 2¹ = 428614871 is a prime.

It is a super-2 number, since 2×428614873² = 367421418713612258, which contains 22 as substring.

Together with 428614871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (428614871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214307436 + 214307437.

It is an arithmetic number, because the mean of its divisors is an integer number (214307437).

Almost surely, 2^428614873 is an apocalyptic number.

It is an amenable number.

428614873 is a deficient number, since it is larger than the sum of its proper divisors (1).

428614873 is an equidigital number, since it uses as much as digits as its factorization.

428614873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The square root of 428614873 is about 20703.0160363170. The cubic root of 428614873 is about 753.9729162362.

The spelling of 428614873 in words is "four hundred twenty-eight million, six hundred fourteen thousand, eight hundred seventy-three".