1001001329 has 2 divisors, whose sum is σ = 1001001330. Its totient is φ = 1001001328.

The previous prime is 1001001317. The next prime is 1001001349. The reversal of 1001001329 is 9231001001.

It is a happy number.

1001001329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792141025 + 208860304 = 28145^2 + 14452^2 .

It is an emirp because it is prime and its reverse (9231001001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001001329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001001349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500664 + 500500665.

It is an arithmetic number, because the mean of its divisors is an integer number (500500665).

Almost surely, 2^1001001329 is an apocalyptic number.

It is an amenable number.

1001001329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001001329 is an equidigital number, since it uses as much as digits as its factorization.

1001001329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1001001329 is about 31638.6050419420. The cubic root of 1001001329 is about 1000.3336649886. Note that the first 3 decimals are identical.

The spelling of 1001001329 in words is "one billion, one million, one thousand, three hundred twenty-nine".