1339989484981 has 16 divisors (see below), whose sum is σ = 1550973916800. Its totient is φ = 1133933568768.

The previous prime is 1339989484979. The next prime is 1339989484987. The reversal of 1339989484981 is 1894849899331.

It is not a de Polignac number, because 1339989484981 - 2¹ = 1339989484979 is a prime.

It is a super-2 number, since 2×1339989484981² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1339989484898 and 1339989484907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339989484987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221360 + ... + 2042473.

It is an arithmetic number, because the mean of its divisors is an integer number (96935869800).

Almost surely, 2^{1339989484981} is an apocalyptic number.

It is an amenable number.

1339989484981 is a deficient number, since it is larger than the sum of its proper divisors (210984431819).

1339989484981 is an equidigital number, since it uses as much as digits as its factorization.

1339989484981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264588.

The product of its digits is 483729408, while the sum is 76.

The spelling of 1339989484981 in words is "one trillion, three hundred thirty-nine billion, nine hundred eighty-nine million, four hundred eighty-four thousand, nine hundred eighty-one".