2001929 has 4 divisors (see below), whose sum is σ = 2035920. Its totient is φ = 1967940.

The previous prime is 2001919. The next prime is 2001953. The reversal of 2001929 is 9291002.

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 2001929 - 2⁸ = 2001673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16907 + ... + 17024.

It is an arithmetic number, because the mean of its divisors is an integer number (508980).

2^2001929 is an apocalyptic number.

It is an amenable number.

2001929 is a deficient number, since it is larger than the sum of its proper divisors (33991).

2001929 is an equidigital number, since it uses as much as digits as its factorization.

2001929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33990.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2001929 is about 1414.8954024945. The cubic root of 2001929 is about 126.0325984354.

The spelling of 2001929 in words is "two million, one thousand, nine hundred twenty-nine".