386644229 has 2 divisors, whose sum is σ = 386644230. Its totient is φ = 386644228.

The previous prime is 386644201. The next prime is 386644289. The reversal of 386644229 is 922446683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296356225 + 90288004 = 17215^2 + 9502^2 .

It is an emirp because it is prime and its reverse (922446683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 386644229 - 2²⁸ = 118208773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 386644229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386644289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193322114 + 193322115.

It is an arithmetic number, because the mean of its divisors is an integer number (193322115).

Almost surely, 2^386644229 is an apocalyptic number.

It is an amenable number.

386644229 is a deficient number, since it is larger than the sum of its proper divisors (1).

386644229 is an equidigital number, since it uses as much as digits as its factorization.

386644229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 44.

The square root of 386644229 is about 19663.2710656188. The cubic root of 386644229 is about 728.5127844030.

The spelling of 386644229 in words is "three hundred eighty-six million, six hundred forty-four thousand, two hundred twenty-nine".