7649449 has 2 divisors, whose sum is σ = 7649450. Its totient is φ = 7649448.

The previous prime is 7649443. The next prime is 7649459. The reversal of 7649449 is 9449467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7601049 + 48400 = 2757^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7649449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7649443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824724 + 3824725.

It is an arithmetic number, because the mean of its divisors is an integer number (3824725).

Almost surely, 2^7649449 is an apocalyptic number.

It is an amenable number.

7649449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7649449 is an equidigital number, since it uses as much as digits as its factorization.

7649449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 7649449 is about 2765.7637281590. The cubic root of 7649449 is about 197.0350028418.

The spelling of 7649449 in words is "seven million, six hundred forty-nine thousand, four hundred forty-nine".