7229639 has 2 divisors, whose sum is σ = 7229640. Its totient is φ = 7229638.

The previous prime is 7229623. The next prime is 7229687. The reversal of 7229639 is 9369227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7229639 - 2⁴ = 7229623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7229609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614819 + 3614820.

It is an arithmetic number, because the mean of its divisors is an integer number (3614820).

Almost surely, 2^7229639 is an apocalyptic number.

7229639 is a deficient number, since it is larger than the sum of its proper divisors (1).

7229639 is an equidigital number, since it uses as much as digits as its factorization.

7229639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 7229639 is about 2688.7988024395. The cubic root of 7229639 is about 193.3624784308.

The spelling of 7229639 in words is "seven million, two hundred twenty-nine thousand, six hundred thirty-nine".