2249421 has 4 divisors (see below), whose sum is σ = 2999232. Its totient is φ = 1499612.

The previous prime is 2249419. The next prime is 2249431. The reversal of 2249421 is 1249422.

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 2249421 - 2¹ = 2249419 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 2249391 and 2249400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2249411) 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, 374901 + ... + 374906.

It is an arithmetic number, because the mean of its divisors is an integer number (749808).

2^2249421 is an apocalyptic number.

It is an amenable number.

2249421 is a deficient number, since it is larger than the sum of its proper divisors (749811).

2249421 is an equidigital number, since it uses as much as digits as its factorization.

2249421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749810.

The product of its digits is 1152, while the sum is 24.

The square root of 2249421 is about 1499.8069875821. The cubic root of 2249421 is about 131.0258286775.

Subtracting from 2249421 its reverse (1249422), we obtain a palindrome (999999).

The spelling of 2249421 in words is "two million, two hundred forty-nine thousand, four hundred twenty-one".