139768389 has 16 divisors (see below), whose sum is σ = 217963200. Its totient is φ = 88274448.

The previous prime is 139768357. The next prime is 139768397. The reversal of 139768389 is 983867931.

It is not a de Polignac number, because 139768389 - 2⁵ = 139768357 is a prime.

It is a super-3 number, since 3×139768389³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139768319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135714 + ... + 136739.

It is an arithmetic number, because the mean of its divisors is an integer number (13622700).

Almost surely, 2^139768389 is an apocalyptic number.

139768389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

139768389 is a deficient number, since it is larger than the sum of its proper divisors (78194811).

139768389 is a wasteful number, since it uses less digits than its factorization.

139768389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272481 (or 272475 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 139768389 is about 11822.3681637817. The cubic root of 139768389 is about 518.9629095750.

The spelling of 139768389 in words is "one hundred thirty-nine million, seven hundred sixty-eight thousand, three hundred eighty-nine".