834520997 has 2 divisors, whose sum is σ = 834520998. Its totient is φ = 834520996.

The previous prime is 834520993. The next prime is 834521071. The reversal of 834520997 is 799025438.

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., 719902561 + 114618436 = 26831^2 + 10706^2 .

It is a cyclic number.

It is not a de Polignac number, because 834520997 - 2² = 834520993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834520991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417260498 + 417260499.

It is an arithmetic number, because the mean of its divisors is an integer number (417260499).

Almost surely, 2^834520997 is an apocalyptic number.

It is an amenable number.

834520997 is a deficient number, since it is larger than the sum of its proper divisors (1).

834520997 is an equidigital number, since it uses as much as digits as its factorization.

834520997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 834520997 is about 28888.0770734225. The cubic root of 834520997 is about 941.4828703895.

The spelling of 834520997 in words is "eight hundred thirty-four million, five hundred twenty thousand, nine hundred ninety-seven".