2091629 has 8 divisors (see below), whose sum is σ = 2252088. Its totient is φ = 1935360.

The previous prime is 2091623. The next prime is 2091631. The reversal of 2091629 is 9261902.

It can be written as a sum of positive squares in 4 ways, for example, as 362404 + 1729225 = 602^2 + 1315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2091629 - 2⁴ = 2091613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (281511).

2^2091629 is an apocalyptic number.

It is an amenable number.

2091629 is a deficient number, since it is larger than the sum of its proper divisors (160459).

2091629 is a wasteful number, since it uses less digits than its factorization.

2091629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2091629 is about 1446.2465211713. The cubic root of 2091629 is about 127.8875354917.

The spelling of 2091629 in words is "two million, ninety-one thousand, six hundred twenty-nine".