7638229 has 2 divisors, whose sum is σ = 7638230. Its totient is φ = 7638228.

The previous prime is 7638227. The next prime is 7638233. The reversal of 7638229 is 9228367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5650129 + 1988100 = 2377^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 7638229 - 2¹ = 7638227 is a prime.

Together with 7638227, it forms a pair of twin primes.

It is equal to p₅₁₆₉₈₈ and since 7638229 and 516988 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7638227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3819114 + 3819115.

It is an arithmetic number, because the mean of its divisors is an integer number (3819115).

Almost surely, 2^7638229 is an apocalyptic number.

It is an amenable number.

7638229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7638229 is an equidigital number, since it uses as much as digits as its factorization.

7638229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 7638229 is about 2763.7346109929. The cubic root of 7638229 is about 196.9386205406.

The spelling of 7638229 in words is "seven million, six hundred thirty-eight thousand, two hundred twenty-nine".