97939397 has 8 divisors (see below), whose sum is σ = 104729112. Its totient is φ = 91264000.

The previous prime is 97939393. The next prime is 97939417. The reversal of 97939397 is 79393979.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48011041 + 49928356 = 6929^2 + 7066^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97939397 - 2² = 97939393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97939393) 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 in 7 ways as a sum of consecutive naturals, for example, 26804 + ... + 30237.

It is an arithmetic number, because the mean of its divisors is an integer number (13091139).

Almost surely, 2^97939397 is an apocalyptic number.

It is an amenable number.

97939397 is a deficient number, since it is larger than the sum of its proper divisors (6789715).

97939397 is a wasteful number, since it uses less digits than its factorization.

97939397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57159.

The product of its digits is 2893401, while the sum is 56.

The square root of 97939397 is about 9896.4335495167. The cubic root of 97939397 is about 460.9485734626.

The spelling of 97939397 in words is "ninety-seven million, nine hundred thirty-nine thousand, three hundred ninety-seven".