830292217 has 2 divisors, whose sum is σ = 830292218. Its totient is φ = 830292216.

The previous prime is 830292209. The next prime is 830292233. The reversal of 830292217 is 712292038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738534976 + 91757241 = 27176^2 + 9579^2 .

It is a cyclic number.

It is not a de Polignac number, because 830292217 - 2³ = 830292209 is a prime.

It is a super-2 number, since 2×830292217² = 1378770331221550178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (830296217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415146108 + 415146109.

It is an arithmetic number, because the mean of its divisors is an integer number (415146109).

Almost surely, 2^830292217 is an apocalyptic number.

It is an amenable number.

830292217 is a deficient number, since it is larger than the sum of its proper divisors (1).

830292217 is an equidigital number, since it uses as much as digits as its factorization.

830292217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 830292217 is about 28814.7916355472. The cubic root of 830292217 is about 939.8899135452.

The spelling of 830292217 in words is "eight hundred thirty million, two hundred ninety-two thousand, two hundred seventeen".