7638849 has 6 divisors (see below), whose sum is σ = 11033906. Its totient is φ = 5092560.

The previous prime is 7638823. The next prime is 7638853. The reversal of 7638849 is 9488367.

It is a happy number.

7638849 is a `hidden beast` number, since 7 + 638 + 8 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 589824 = 2655^2 + 768^2 .

It is not a de Polignac number, because 7638849 - 2⁷ = 7638721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7638859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424372 + ... + 424389.

Almost surely, 2^7638849 is an apocalyptic number.

It is an amenable number.

7638849 is a deficient number, since it is larger than the sum of its proper divisors (3395057).

7638849 is a wasteful number, since it uses less digits than its factorization.

7638849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848767 (or 848764 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 7638849 is about 2763.8467757819. The cubic root of 7638849 is about 196.9439489416.

The spelling of 7638849 in words is "seven million, six hundred thirty-eight thousand, eight hundred forty-nine".