997927097 has 2 divisors, whose sum is σ = 997927098. Its totient is φ = 997927096.

The previous prime is 997927079. The next prime is 997927103. The reversal of 997927097 is 790729799.

Together with previous prime (997927079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980253481 + 17673616 = 31309^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 997927097 - 2²⁶ = 930818233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997927027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498963548 + 498963549.

It is an arithmetic number, because the mean of its divisors is an integer number (498963549).

Almost surely, 2^997927097 is an apocalyptic number.

It is an amenable number.

997927097 is a deficient number, since it is larger than the sum of its proper divisors (1).

997927097 is an equidigital number, since it uses as much as digits as its factorization.

997927097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500846, while the sum is 59.

The square root of 997927097 is about 31589.9841247190. The cubic root of 997927097 is about 999.3085543464.

The spelling of 997927097 in words is "nine hundred ninety-seven million, nine hundred twenty-seven thousand, ninety-seven".