428622269 has 2 divisors, whose sum is σ = 428622270. Its totient is φ = 428622268.

The previous prime is 428622263. The next prime is 428622329. The reversal of 428622269 is 962226824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410872900 + 17749369 = 20270^2 + 4213^2 .

It is a cyclic number.

It is not a de Polignac number, because 428622269 - 2⁴ = 428622253 is a prime.

It is a super-2 number, since 2×428622269² = 367434098965416722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428622263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214311134 + 214311135.

It is an arithmetic number, because the mean of its divisors is an integer number (214311135).

Almost surely, 2^428622269 is an apocalyptic number.

It is an amenable number.

428622269 is a deficient number, since it is larger than the sum of its proper divisors (1).

428622269 is an equidigital number, since it uses as much as digits as its factorization.

428622269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 428622269 is about 20703.1946568639. The cubic root of 428622269 is about 753.9772529589.

The spelling of 428622269 in words is "four hundred twenty-eight million, six hundred twenty-two thousand, two hundred sixty-nine".