2029621 has 4 divisors (see below), whose sum is σ = 2214144. Its totient is φ = 1845100.

The previous prime is 2029597. The next prime is 2029633. The reversal of 2029621 is 1269202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2029621 - 2¹⁷ = 1898549 is a prime.

It is a super-2 number, since 2×2029621² = 8238722807282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2029592 and 2029601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2029661) 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 in 3 ways as a sum of consecutive naturals, for example, 92245 + ... + 92266.

It is an arithmetic number, because the mean of its divisors is an integer number (553536).

2^2029621 is an apocalyptic number.

It is an amenable number.

2029621 is a deficient number, since it is larger than the sum of its proper divisors (184523).

2029621 is a wasteful number, since it uses less digits than its factorization.

2029621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184522.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2029621 is about 1424.6476757430. The cubic root of 2029621 is about 126.6110613121.

The spelling of 2029621 in words is "two million, twenty-nine thousand, six hundred twenty-one".