97993837 has 2 divisors, whose sum is σ = 97993838. Its totient is φ = 97993836.

The previous prime is 97993793. The next prime is 97993901. The reversal of 97993837 is 73839979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90992521 + 7001316 = 9539^2 + 2646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97993837 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 (97996837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48996918 + 48996919.

It is an arithmetic number, because the mean of its divisors is an integer number (48996919).

Almost surely, 2^97993837 is an apocalyptic number.

It is an amenable number.

97993837 is a deficient number, since it is larger than the sum of its proper divisors (1).

97993837 is an equidigital number, since it uses as much as digits as its factorization.

97993837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 55.

The square root of 97993837 is about 9899.1836532110. The cubic root of 97993837 is about 461.0339643370.

The spelling of 97993837 in words is "ninety-seven million, nine hundred ninety-three thousand, eight hundred thirty-seven".