9994000729 has 2 divisors, whose sum is σ = 9994000730. Its totient is φ = 9994000728.

The previous prime is 9994000721. The next prime is 9994000739. The reversal of 9994000729 is 9270004999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6897634704 + 3096366025 = 83052^2 + 55645^2 .

It is a cyclic number.

It is not a de Polignac number, because 9994000729 - 2³ = 9994000721 is a prime.

It is not a weakly prime, because it can be changed into another prime (9994000721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997000364 + 4997000365.

It is an arithmetic number, because the mean of its divisors is an integer number (4997000365).

Almost surely, 2^9994000729 is an apocalyptic number.

It is an amenable number.

9994000729 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994000729 is an equidigital number, since it uses as much as digits as its factorization.

9994000729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 9994000729 is about 99969.9991447434. Note that the first 3 decimals coincide. The cubic root of 9994000729 is about 2154.0037692615.

The spelling of 9994000729 in words is "nine billion, nine hundred ninety-four million, seven hundred twenty-nine", and thus it is an aban number.