7212438449 has 2 divisors, whose sum is σ = 7212438450. Its totient is φ = 7212438448.

The previous prime is 7212438419. The next prime is 7212438529. The reversal of 7212438449 is 9448342127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6598637824 + 613800625 = 81232^2 + 24775^2 .

It is a cyclic number.

It is not a de Polignac number, because 7212438449 - 2⁸ = 7212438193 is a prime.

It is a super-2 number, since 2×7212438449² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7212438419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606219224 + 3606219225.

It is an arithmetic number, because the mean of its divisors is an integer number (3606219225).

Almost surely, 2^7212438449 is an apocalyptic number.

It is an amenable number.

7212438449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7212438449 is an equidigital number, since it uses as much as digits as its factorization.

7212438449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 7212438449 is about 84926.0763782244. The cubic root of 7212438449 is about 1932.0900915778.

The spelling of 7212438449 in words is "seven billion, two hundred twelve million, four hundred thirty-eight thousand, four hundred forty-nine".