1388039299 has 2 divisors, whose sum is σ = 1388039300. Its totient is φ = 1388039298.

The previous prime is 1388039293. The next prime is 1388039309. The reversal of 1388039299 is 9929308831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1388039299 - 2¹¹ = 1388037251 is a prime.

It is a super-2 number, since 2×1388039299² = 3853306191136822802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1388039293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694019649 + 694019650.

It is an arithmetic number, because the mean of its divisors is an integer number (694019650).

Almost surely, 2^1388039299 is an apocalyptic number.

1388039299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388039299 is an equidigital number, since it uses as much as digits as its factorization.

1388039299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 1388039299 is about 37256.3994368753. The cubic root of 1388039299 is about 1115.4940396812.

The spelling of 1388039299 in words is "one billion, three hundred eighty-eight million, thirty-nine thousand, two hundred ninety-nine".