7158449 has 2 divisors, whose sum is σ = 7158450. Its totient is φ = 7158448.

The previous prime is 7158409. The next prime is 7158461. The reversal of 7158449 is 9448517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 1517824 = 2375^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 7158449 - 2¹² = 7154353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7158409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3579224 + 3579225.

It is an arithmetic number, because the mean of its divisors is an integer number (3579225).

Almost surely, 2^7158449 is an apocalyptic number.

It is an amenable number.

7158449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7158449 is an equidigital number, since it uses as much as digits as its factorization.

7158449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 7158449 is about 2675.5277983979. The cubic root of 7158449 is about 192.7257059095.

The spelling of 7158449 in words is "seven million, one hundred fifty-eight thousand, four hundred forty-nine".