2329921 has 4 divisors (see below), whose sum is σ = 2541744. Its totient is φ = 2118100.

The previous prime is 2329891. The next prime is 2329937. The reversal of 2329921 is 1299232.

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 2329921 - 2¹⁵ = 2297153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2329921.

It is not an unprimeable number, because it can be changed into a prime (2329961) 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, 105895 + ... + 105916.

It is an arithmetic number, because the mean of its divisors is an integer number (635436).

2^2329921 is an apocalyptic number.

It is an amenable number.

2329921 is a deficient number, since it is larger than the sum of its proper divisors (211823).

2329921 is a wasteful number, since it uses less digits than its factorization.

2329921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211822.

The product of its digits is 1944, while the sum is 28.

The square root of 2329921 is about 1526.4078747176. The cubic root of 2329921 is about 132.5705521974.

It can be divided in two parts, 232 and 9921, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 2329921 in words is "two million, three hundred twenty-nine thousand, nine hundred twenty-one".