5386989938121 has 81 divisors (see below), whose sum is σ = 8702955784341. Its totient is φ = 3208535193600.

The previous prime is 5386989938107. The next prime is 5386989938129. The reversal of 5386989938121 is 1218399896835.

The square root of 5386989938121 is 2320989.

It is a perfect power (a square), and thus also a powerful number.

5386989938121 is a `hidden beast` number, since 5 + 386 + 9 + 8 + 99 + 38 + 121 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 453420423225 + 4933569514896 = 673365^2 + 2221164^2 .

It is not a de Polignac number, because 5386989938121 - 2⁷ = 5386989937993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5386989938121.

It is not an unprimeable number, because it can be changed into a prime (5386989938129) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 4672150281 + ... + 4672151433.

Almost surely, 2^{5386989938121} is an apocalyptic number.

5386989938121 is the 2320989-th square number.

5386989938121 is the 1160495-th centered octagonal number.

It is an amenable number.

5386989938121 is a deficient number, since it is larger than the sum of its proper divisors (3315965846220).

5386989938121 is an equidigital number, since it uses as much as digits as its factorization.

5386989938121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456 (or 1228 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 72.

The spelling of 5386989938121 in words is "five trillion, three hundred eighty-six billion, nine hundred eighty-nine million, nine hundred thirty-eight thousand, one hundred twenty-one".