428522099 has 2 divisors, whose sum is σ = 428522100. Its totient is φ = 428522098.

The previous prime is 428522071. The next prime is 428522117. The reversal of 428522099 is 990225824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428522099 is a prime.

It is not a weakly prime, because it can be changed into another prime (428522069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214261049 + 214261050.

It is an arithmetic number, because the mean of its divisors is an integer number (214261050).

Almost surely, 2^428522099 is an apocalyptic number.

428522099 is a deficient number, since it is larger than the sum of its proper divisors (1).

428522099 is an equidigital number, since it uses as much as digits as its factorization.

428522099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 428522099 is about 20700.7753236443. The cubic root of 428522099 is about 753.9185129827.

The spelling of 428522099 in words is "four hundred twenty-eight million, five hundred twenty-two thousand, ninety-nine".