428277149 has 2 divisors, whose sum is σ = 428277150. Its totient is φ = 428277148.

The previous prime is 428277139. The next prime is 428277163. The reversal of 428277149 is 941772824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387381124 + 40896025 = 19682^2 + 6395^2 .

It is a cyclic number.

It is not a de Polignac number, because 428277149 - 2¹⁶ = 428211613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428277139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214138574 + 214138575.

It is an arithmetic number, because the mean of its divisors is an integer number (214138575).

Almost surely, 2^428277149 is an apocalyptic number.

It is an amenable number.

428277149 is a deficient number, since it is larger than the sum of its proper divisors (1).

428277149 is an equidigital number, since it uses as much as digits as its factorization.

428277149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 428277149 is about 20694.8580328544. The cubic root of 428277149 is about 753.7748350264.

The spelling of 428277149 in words is "four hundred twenty-eight million, two hundred seventy-seven thousand, one hundred forty-nine".