97909937 has 2 divisors, whose sum is σ = 97909938. Its totient is φ = 97909936.

The previous prime is 97909913. The next prime is 97909943. The reversal of 97909937 is 73990979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65545216 + 32364721 = 8096^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 97909937 - 2¹⁰ = 97908913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97903937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48954968 + 48954969.

It is an arithmetic number, because the mean of its divisors is an integer number (48954969).

Almost surely, 2^97909937 is an apocalyptic number.

It is an amenable number.

97909937 is a deficient number, since it is larger than the sum of its proper divisors (1).

97909937 is an equidigital number, since it uses as much as digits as its factorization.

97909937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 964467, while the sum is 53.

The square root of 97909937 is about 9894.9450225860. The cubic root of 97909937 is about 460.9023513185.

The spelling of 97909937 in words is "ninety-seven million, nine hundred nine thousand, nine hundred thirty-seven".