834971993 has 2 divisors, whose sum is σ = 834971994. Its totient is φ = 834971992.

The previous prime is 834971989. The next prime is 834972037. The reversal of 834971993 is 399179438.

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., 827310169 + 7661824 = 28763^2 + 2768^2 .

It is a cyclic number.

It is not a de Polignac number, because 834971993 - 2² = 834971989 is a prime.

It is not a weakly prime, because it can be changed into another prime (834974993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417485996 + 417485997.

It is an arithmetic number, because the mean of its divisors is an integer number (417485997).

Almost surely, 2^834971993 is an apocalyptic number.

It is an amenable number.

834971993 is a deficient number, since it is larger than the sum of its proper divisors (1).

834971993 is an equidigital number, since it uses as much as digits as its factorization.

834971993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 834971993 is about 28895.8819384354. The cubic root of 834971993 is about 941.6524401363.

The spelling of 834971993 in words is "eight hundred thirty-four million, nine hundred seventy-one thousand, nine hundred ninety-three".