7212449 has 4 divisors (see below), whose sum is σ = 7231380. Its totient is φ = 7193520.

The previous prime is 7212397. The next prime is 7212487. The reversal of 7212449 is 9442127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2512225 + 4700224 = 1585^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 7212449 - 2⁸ = 7212193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8882 + ... + 9659.

It is an arithmetic number, because the mean of its divisors is an integer number (1807845).

Almost surely, 2^7212449 is an apocalyptic number.

It is an amenable number.

7212449 is a deficient number, since it is larger than the sum of its proper divisors (18931).

7212449 is a wasteful number, since it uses less digits than its factorization.

7212449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18930.

The product of its digits is 4032, while the sum is 29.

The square root of 7212449 is about 2685.6003053321. The cubic root of 7212449 is about 193.2091033722.

It can be divided in two parts, 72 and 12449, that added together give a palindrome (12521).

The spelling of 7212449 in words is "seven million, two hundred twelve thousand, four hundred forty-nine".