1386940001 has 2 divisors, whose sum is σ = 1386940002. Its totient is φ = 1386940000.

The previous prime is 1386939991. The next prime is 1386940063. The reversal of 1386940001 is 1000496831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 730350625 + 656589376 = 27025^2 + 25624^2 .

It is an emirp because it is prime and its reverse (1000496831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1386940001 - 2¹⁸ = 1386677857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1386940001.

It is not a weakly prime, because it can be changed into another prime (1386940091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693470000 + 693470001.

It is an arithmetic number, because the mean of its divisors is an integer number (693470001).

Almost surely, 2^1386940001 is an apocalyptic number.

It is an amenable number.

1386940001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386940001 is an equidigital number, since it uses as much as digits as its factorization.

1386940001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1386940001 is about 37241.6433713659. The cubic root of 1386940001 is about 1115.1994792811.

The spelling of 1386940001 in words is "one billion, three hundred eighty-six million, nine hundred forty thousand, one".