428845149 has 12 divisors (see below), whose sum is σ = 633849216. Its totient is φ = 279247752.

The previous prime is 428845139. The next prime is 428845159. The reversal of 428845149 is 941548824.

428845149 is a `hidden beast` number, since 428 + 84 + 5 + 149 = 666.

It is an interprime number because it is at equal distance from previous prime (428845139) and next prime (428845159).

It is not a de Polignac number, because 428845149 - 2¹⁶ = 428779613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428845129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 553677 + ... + 554450.

It is an arithmetic number, because the mean of its divisors is an integer number (52820768).

Almost surely, 2^428845149 is an apocalyptic number.

It is an amenable number.

428845149 is a deficient number, since it is larger than the sum of its proper divisors (205004067).

428845149 is a wasteful number, since it uses less digits than its factorization.

428845149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108176 (or 1108173 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 428845149 is about 20708.5767014539. The cubic root of 428845149 is about 754.1079176048.

The spelling of 428845149 in words is "four hundred twenty-eight million, eight hundred forty-five thousand, one hundred forty-nine".