1399385627756 has 18 divisors (see below), whose sum is σ = 2489729320260. Its totient is φ = 688222432560.

The previous prime is 1399385627729. The next prime is 1399385627767. The reversal of 1399385627756 is 6577265839931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399385627756.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 46994846 + ... + 47024613.

It is an arithmetic number, because the mean of its divisors is an integer number (138318295570).

Almost surely, 2^{1399385627756} is an apocalyptic number.

It is an amenable number.

1399385627756 is a deficient number, since it is larger than the sum of its proper divisors (1090343692504).

1399385627756 is an equidigital number, since it uses as much as digits as its factorization.

1399385627756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94019585 (or 94019522 counting only the distinct ones).

The product of its digits is 514382400, while the sum is 71.

The spelling of 1399385627756 in words is "one trillion, three hundred ninety-nine billion, three hundred eighty-five million, six hundred twenty-seven thousand, seven hundred fifty-six".