428825149 has 4 divisors (see below), whose sum is σ = 430204320. Its totient is φ = 427445980.

The previous prime is 428825107. The next prime is 428825213. The reversal of 428825149 is 941528824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428825149 - 2⁹ = 428824637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428825849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689119 + ... + 689740.

It is an arithmetic number, because the mean of its divisors is an integer number (107551080).

Almost surely, 2^428825149 is an apocalyptic number.

It is an amenable number.

428825149 is a deficient number, since it is larger than the sum of its proper divisors (1379171).

428825149 is a wasteful number, since it uses less digits than its factorization.

428825149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379170.

The product of its digits is 184320, while the sum is 43.

The square root of 428825149 is about 20708.0938041144. The cubic root of 428825149 is about 754.0961943422.

The spelling of 428825149 in words is "four hundred twenty-eight million, eight hundred twenty-five thousand, one hundred forty-nine".