7408649 has 2 divisors, whose sum is σ = 7408650. Its totient is φ = 7408648.

The previous prime is 7408603. The next prime is 7408669. The reversal of 7408649 is 9468047.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6285049 + 1123600 = 2507^2 + 1060^2 .

It is an emirp because it is prime and its reverse (9468047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7408649 is a prime.

It is not a weakly prime, because it can be changed into another prime (7408669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3704324 + 3704325.

It is an arithmetic number, because the mean of its divisors is an integer number (3704325).

Almost surely, 2^7408649 is an apocalyptic number.

It is an amenable number.

7408649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7408649 is an equidigital number, since it uses as much as digits as its factorization.

7408649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 7408649 is about 2721.8833553259. The cubic root of 7408649 is about 194.9454065887.

The spelling of 7408649 in words is "seven million, four hundred eight thousand, six hundred forty-nine".