9970397 has 2 divisors, whose sum is σ = 9970398. Its totient is φ = 9970396.

The previous prime is 9970357. The next prime is 9970409. The reversal of 9970397 is 7930799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8844676 + 1125721 = 2974^2 + 1061^2 .

It is an emirp because it is prime and its reverse (7930799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9970397 - 2⁶ = 9970333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9970357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4985198 + 4985199.

It is an arithmetic number, because the mean of its divisors is an integer number (4985199).

Almost surely, 2^9970397 is an apocalyptic number.

It is an amenable number.

9970397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9970397 is an equidigital number, since it uses as much as digits as its factorization.

9970397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107163, while the sum is 44.

The square root of 9970397 is about 3157.5935457243. The cubic root of 9970397 is about 215.2306664446.

The spelling of 9970397 in words is "nine million, nine hundred seventy thousand, three hundred ninety-seven".