805123097 has 2 divisors, whose sum is σ = 805123098. Its totient is φ = 805123096.

The previous prime is 805123093. The next prime is 805123127. The reversal of 805123097 is 790321508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681001216 + 124121881 = 26096^2 + 11141^2 .

It is a cyclic number.

It is not a de Polignac number, because 805123097 - 2² = 805123093 is a prime.

It is not a weakly prime, because it can be changed into another prime (805123093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402561548 + 402561549.

It is an arithmetic number, because the mean of its divisors is an integer number (402561549).

Almost surely, 2^805123097 is an apocalyptic number.

It is an amenable number.

805123097 is a deficient number, since it is larger than the sum of its proper divisors (1).

805123097 is an equidigital number, since it uses as much as digits as its factorization.

805123097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 805123097 is about 28374.6911348829. The cubic root of 805123097 is about 930.2951608701.

The spelling of 805123097 in words is "eight hundred five million, one hundred twenty-three thousand, ninety-seven".