830940997 has 2 divisors, whose sum is σ = 830940998. Its totient is φ = 830940996.

The previous prime is 830940961. The next prime is 830941009. The reversal of 830940997 is 799049038.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 716579361 + 114361636 = 26769^2 + 10694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-830940997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 830940997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830940907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415470498 + 415470499.

It is an arithmetic number, because the mean of its divisors is an integer number (415470499).

Almost surely, 2^830940997 is an apocalyptic number.

It is an amenable number.

830940997 is a deficient number, since it is larger than the sum of its proper divisors (1).

830940997 is an equidigital number, since it uses as much as digits as its factorization.

830940997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 830940997 is about 28826.0471969363. The cubic root of 830940997 is about 940.1346559019.

The spelling of 830940997 in words is "eight hundred thirty million, nine hundred forty thousand, nine hundred ninety-seven".