7943449 has 2 divisors, whose sum is σ = 7943450. Its totient is φ = 7943448.

The previous prime is 7943443. The next prime is 7943459. The reversal of 7943449 is 9443497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 1364224 = 2565^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 7943449 - 2⁷ = 7943321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7943443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3971724 + 3971725.

It is an arithmetic number, because the mean of its divisors is an integer number (3971725).

Almost surely, 2^7943449 is an apocalyptic number.

It is an amenable number.

7943449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7943449 is an equidigital number, since it uses as much as digits as its factorization.

7943449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 7943449 is about 2818.4124964242. The cubic root of 7943449 is about 199.5276268631.

The spelling of 7943449 in words is "seven million, nine hundred forty-three thousand, four hundred forty-nine".