1386939707 has 2 divisors, whose sum is σ = 1386939708. Its totient is φ = 1386939706.

The previous prime is 1386939689. The next prime is 1386939791. The reversal of 1386939707 is 7079396831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1386939707 - 2⁸ = 1386939451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1386939607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693469853 + 693469854.

It is an arithmetic number, because the mean of its divisors is an integer number (693469854).

Almost surely, 2^1386939707 is an apocalyptic number.

1386939707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386939707 is an equidigital number, since it uses as much as digits as its factorization.

1386939707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The square root of 1386939707 is about 37241.6394241714. The cubic root of 1386939707 is about 1115.1994004821.

The spelling of 1386939707 in words is "one billion, three hundred eighty-six million, nine hundred thirty-nine thousand, seven hundred seven".