1001629 has 2 divisors, whose sum is σ = 1001630. Its totient is φ = 1001628.

The previous prime is 1001621. The next prime is 1001639. The reversal of 1001629 is 9261001.

1001629 is nontrivially palindromic in base 9.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996004 + 5625 = 998^2 + 75^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001629 - 2³ = 1001621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500814 + 500815.

It is an arithmetic number, because the mean of its divisors is an integer number (500815).

2^1001629 is an apocalyptic number.

It is an amenable number.

1001629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001629 is an equidigital number, since it uses as much as digits as its factorization.

1001629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1001629 is about 1000.8141685648. The cubic root of 1001629 is about 100.0542705418.

The spelling of 1001629 in words is "one million, one thousand, six hundred twenty-nine".