99729437 has 2 divisors, whose sum is σ = 99729438. Its totient is φ = 99729436.

The previous prime is 99729419. The next prime is 99729439. The reversal of 99729437 is 73492799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99580441 + 148996 = 9979^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 99729437 - 2⁸ = 99729181 is a prime.

Together with 99729439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99729439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49864718 + 49864719.

It is an arithmetic number, because the mean of its divisors is an integer number (49864719).

Almost surely, 2^99729437 is an apocalyptic number.

It is an amenable number.

99729437 is a deficient number, since it is larger than the sum of its proper divisors (1).

99729437 is an equidigital number, since it uses as much as digits as its factorization.

99729437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 50.

The square root of 99729437 is about 9986.4626870579. The cubic root of 99729437 is about 463.7398911880.

The spelling of 99729437 in words is "ninety-nine million, seven hundred twenty-nine thousand, four hundred thirty-seven".