2382921 has 6 divisors (see below), whose sum is σ = 3442010. Its totient is φ = 1588608.

The previous prime is 2382917. The next prime is 2382937. The reversal of 2382921 is 1292832.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2368521 + 14400 = 1539^2 + 120^2 .

It is not a de Polignac number, because 2382921 - 2² = 2382917 is a prime.

It is a Duffinian number.

2382921 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2382221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132376 + ... + 132393.

2^2382921 is an apocalyptic number.

It is an amenable number.

2382921 is a deficient number, since it is larger than the sum of its proper divisors (1059089).

2382921 is a wasteful number, since it uses less digits than its factorization.

2382921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264775 (or 264772 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2382921 is about 1543.6712732962. The cubic root of 2382921 is about 133.5682435248.

It can be divided in two parts, 23 and 82921, that added together give a square (82944 = 288²).

The spelling of 2382921 in words is "two million, three hundred eighty-two thousand, nine hundred twenty-one".