1399921244986 has 24 divisors (see below), whose sum is σ = 2330987473332. Its totient is φ = 630027552000.

The previous prime is 1399921244881. The next prime is 1399921245067. The reversal of 1399921244986 is 6894421299931.

It can be written as a sum of positive squares in 2 ways, for example, as 1241541920025 + 158379324961 = 1114245^2 + 397969^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28613175 + ... + 28662058.

Almost surely, 2^{1399921244986} is an apocalyptic number.

1399921244986 is a deficient number, since it is larger than the sum of its proper divisors (931066228346).

1399921244986 is a wasteful number, since it uses less digits than its factorization.

1399921244986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57275358 (or 57275347 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 67.

Subtracting 1399921244986 from its reverse (6894421299931), we obtain a palindrome (5494500054945).

The spelling of 1399921244986 in words is "one trillion, three hundred ninety-nine billion, nine hundred twenty-one million, two hundred forty-four thousand, nine hundred eighty-six".