386644531291229 has 2 divisors, whose sum is σ = 386644531291230. Its totient is φ = 386644531291228.

The previous prime is 386644531291189. The next prime is 386644531291241. The reversal of 386644531291229 is 922192135446683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258321173851129 + 128323357440100 = 16072373^2 + 11327990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386644531291229 is a prime.

It is a super-2 number, since 2×386644531291229² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386644531296229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193322265645614 + 193322265645615.

It is an arithmetic number, because the mean of its divisors is an integer number (193322265645615).

Almost surely, 2^{386644531291229} is an apocalyptic number.

It is an amenable number.

386644531291229 is a deficient number, since it is larger than the sum of its proper divisors (1).

386644531291229 is an equidigital number, since it uses as much as digits as its factorization.

386644531291229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134369280, while the sum is 65.

The spelling of 386644531291229 in words is "three hundred eighty-six trillion, six hundred forty-four billion, five hundred thirty-one million, two hundred ninety-one thousand, two hundred twenty-nine".