428901469 has 2 divisors, whose sum is σ = 428901470. Its totient is φ = 428901468.

The previous prime is 428901437. The next prime is 428901481. The reversal of 428901469 is 964109824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418693444 + 10208025 = 20462^2 + 3195^2 .

It is a cyclic number.

It is not a de Polignac number, because 428901469 - 2⁵ = 428901437 is a prime.

It is a super-2 number, since 2×428901469² = 367912940220715922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428901409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214450734 + 214450735.

It is an arithmetic number, because the mean of its divisors is an integer number (214450735).

Almost surely, 2^428901469 is an apocalyptic number.

It is an amenable number.

428901469 is a deficient number, since it is larger than the sum of its proper divisors (1).

428901469 is an equidigital number, since it uses as much as digits as its factorization.

428901469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 428901469 is about 20709.9364798640. The cubic root of 428901469 is about 754.1409283539.

The spelling of 428901469 in words is "four hundred twenty-eight million, nine hundred one thousand, four hundred sixty-nine".