139848065989 has 6 divisors (see below), whose sum is σ = 141966508614. Its totient is φ = 137760777000.

The previous prime is 139848065941. The next prime is 139848066037. The reversal of 139848065989 is 989560848931.

It is an interprime number because it is at equal distance from previous prime (139848065941) and next prime (139848066037).

It can be written as a sum of positive squares in only one way, i.e., 128726676225 + 11121389764 = 358785^2 + 105458^2 .

It is not a de Polignac number, because 139848065989 - 2⁹ = 139848065477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139848065089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15572262 + ... + 15581239.

It is an arithmetic number, because the mean of its divisors is an integer number (23661084769).

Almost surely, 2^139848065989 is an apocalyptic number.

It is an amenable number.

139848065989 is a deficient number, since it is larger than the sum of its proper divisors (2118442625).

139848065989 is an frugal number, since it uses more digits than its factorization.

139848065989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31153635 (or 31153568 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 70.

The spelling of 139848065989 in words is "one hundred thirty-nine billion, eight hundred forty-eight million, sixty-five thousand, nine hundred eighty-nine".