428598817 has 2 divisors, whose sum is σ = 428598818. Its totient is φ = 428598816.

The previous prime is 428598811. The next prime is 428598823. The reversal of 428598817 is 718895824.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (428598811) and next prime (428598823).

It can be written as a sum of positive squares in only one way, i.e., 410629696 + 17969121 = 20264^2 + 4239^2 .

It is a cyclic number.

It is not a de Polignac number, because 428598817 - 2³ = 428598809 is a prime.

It is not a weakly prime, because it can be changed into another prime (428598811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214299408 + 214299409.

It is an arithmetic number, because the mean of its divisors is an integer number (214299409).

Almost surely, 2^428598817 is an apocalyptic number.

It is an amenable number.

428598817 is a deficient number, since it is larger than the sum of its proper divisors (1).

428598817 is an equidigital number, since it uses as much as digits as its factorization.

428598817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 52.

The square root of 428598817 is about 20702.6282630974. The cubic root of 428598817 is about 753.9635014592.

The spelling of 428598817 in words is "four hundred twenty-eight million, five hundred ninety-eight thousand, eight hundred seventeen".