428149 has 2 divisors, whose sum is σ = 428150. Its totient is φ = 428148.

The previous prime is 428147. The next prime is 428161. The reversal of 428149 is 941824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381924 + 46225 = 618^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 428149 - 2¹ = 428147 is a prime.

Together with 428147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214074 + 214075.

It is an arithmetic number, because the mean of its divisors is an integer number (214075).

2⁴²⁸¹⁴⁹ is an apocalyptic number.

It is an amenable number.

428149 is a deficient number, since it is larger than the sum of its proper divisors (1).

428149 is an equidigital number, since it uses as much as digits as its factorization.

428149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 428149 is about 654.3309560154. The cubic root of 428149 is about 75.3699646076.

The spelling of 428149 in words is "four hundred twenty-eight thousand, one hundred forty-nine".