7917229 has 2 divisors, whose sum is σ = 7917230. Its totient is φ = 7917228.

The previous prime is 7917211. The next prime is 7917241. The reversal of 7917229 is 9227197.

7917229 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4401604 + 3515625 = 2098^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 7917229 - 2¹¹ = 7915181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7917209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3958614 + 3958615.

It is an arithmetic number, because the mean of its divisors is an integer number (3958615).

Almost surely, 2^7917229 is an apocalyptic number.

It is an amenable number.

7917229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7917229 is an equidigital number, since it uses as much as digits as its factorization.

7917229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 37.

The square root of 7917229 is about 2813.7570968369. The cubic root of 7917229 is about 199.3078490653.

The spelling of 7917229 in words is "seven million, nine hundred seventeen thousand, two hundred twenty-nine".