1386672229 has 2 divisors, whose sum is σ = 1386672230. Its totient is φ = 1386672228.

The previous prime is 1386672223. The next prime is 1386672241. The reversal of 1386672229 is 9222766831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1286872129 + 99800100 = 35873^2 + 9990^2 .

It is an emirp because it is prime and its reverse (9222766831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1386672229 - 2⁵ = 1386672197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386672223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693336114 + 693336115.

It is an arithmetic number, because the mean of its divisors is an integer number (693336115).

Almost surely, 2^1386672229 is an apocalyptic number.

It is an amenable number.

1386672229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386672229 is an equidigital number, since it uses as much as digits as its factorization.

1386672229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 1386672229 is about 37238.0481362813. The cubic root of 1386672229 is about 1115.1277053484.

The spelling of 1386672229 in words is "one billion, three hundred eighty-six million, six hundred seventy-two thousand, two hundred twenty-nine".