1399388383 has 16 divisors (see below), whose sum is σ = 1440391680. Its totient is φ = 1359124416.

The previous prime is 1399388377. The next prime is 1399388411. The reversal of 1399388383 is 3838839931.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1399388383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399388363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2996316 + ... + 2996782.

It is an arithmetic number, because the mean of its divisors is an integer number (90024480).

Almost surely, 2^1399388383 is an apocalyptic number.

1399388383 is a deficient number, since it is larger than the sum of its proper divisors (41003297).

1399388383 is an equidigital number, since it uses as much as digits as its factorization.

1399388383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its digits is 3359232, while the sum is 55.

The square root of 1399388383 is about 37408.3998989532. The cubic root of 1399388383 is about 1118.5260114063.

The spelling of 1399388383 in words is "one billion, three hundred ninety-nine million, three hundred eighty-eight thousand, three hundred eighty-three".