97729339 has 2 divisors, whose sum is σ = 97729340. Its totient is φ = 97729338.

The previous prime is 97729283. The next prime is 97729351. The reversal of 97729339 is 93392779.

It is a strong prime.

It is an emirp because it is prime and its reverse (93392779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97729339 - 2¹⁹ = 97205051 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97729292 and 97729301.

It is not a weakly prime, because it can be changed into another prime (97721339) 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, 48864669 + 48864670.

It is an arithmetic number, because the mean of its divisors is an integer number (48864670).

Almost surely, 2^97729339 is an apocalyptic number.

97729339 is a deficient number, since it is larger than the sum of its proper divisors (1).

97729339 is an equidigital number, since it uses as much as digits as its factorization.

97729339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 49.

The square root of 97729339 is about 9885.8150397426. The cubic root of 97729339 is about 460.6187938768.

The spelling of 97729339 in words is "ninety-seven million, seven hundred twenty-nine thousand, three hundred thirty-nine".