1399543894741 has 2 divisors, whose sum is σ = 1399543894742. Its totient is φ = 1399543894740.

The previous prime is 1399543894561. The next prime is 1399543894759. The reversal of 1399543894741 is 1474983459931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1399302092241 + 241802500 = 1182921^2 + 15550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1399543894741 - 2²³ = 1399535506133 is a prime.

It is a super-3 number, since 3×1399543894741³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399543814741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699771947370 + 699771947371.

It is an arithmetic number, because the mean of its divisors is an integer number (699771947371).

Almost surely, 2^{1399543894741} is an apocalyptic number.

It is an amenable number.

1399543894741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399543894741 is an equidigital number, since it uses as much as digits as its factorization.

1399543894741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117573120, while the sum is 67.

The spelling of 1399543894741 in words is "one trillion, three hundred ninety-nine billion, five hundred forty-three million, eight hundred ninety-four thousand, seven hundred forty-one".