1399845969992 has 36 divisors (see below), whose sum is σ = 2632937785065. Its totient is φ = 697736076000.

The previous prime is 1399845969971. The next prime is 1399845970031. The reversal of 1399845969992 is 2999695489931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1095987047236 + 303858922756 = 1046894^2 + 551234^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=836614.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399845969992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1863975617 + ... + 1863976367.

Almost surely, 2^{1399845969992} is an apocalyptic number.

It is an amenable number.

1399845969992 is a deficient number, since it is larger than the sum of its proper divisors (1233091815073).

1399845969992 is an frugal number, since it uses more digits than its factorization.

1399845969992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 1310 counting only the distinct ones).

The product of its digits is 3061100160, while the sum is 83.

The spelling of 1399845969992 in words is "one trillion, three hundred ninety-nine billion, eight hundred forty-five million, nine hundred sixty-nine thousand, nine hundred ninety-two".