830085917 has 2 divisors, whose sum is σ = 830085918. Its totient is φ = 830085916.

The previous prime is 830085913. The next prime is 830085923. The reversal of 830085917 is 719580038.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 548215396 + 281870521 = 23414^2 + 16789^2 .

It is a cyclic number.

It is not a de Polignac number, because 830085917 - 2² = 830085913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830085913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415042958 + 415042959.

It is an arithmetic number, because the mean of its divisors is an integer number (415042959).

Almost surely, 2^830085917 is an apocalyptic number.

It is an amenable number.

830085917 is a deficient number, since it is larger than the sum of its proper divisors (1).

830085917 is an equidigital number, since it uses as much as digits as its factorization.

830085917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 830085917 is about 28811.2116544931. The cubic root of 830085917 is about 939.8120633030.

The spelling of 830085917 in words is "eight hundred thirty million, eighty-five thousand, nine hundred seventeen".