139369389 has 16 divisors (see below), whose sum is σ = 202353600. Its totient is φ = 84986496.

The previous prime is 139369381. The next prime is 139369393. The reversal of 139369389 is 983963931.

It is not a de Polignac number, because 139369389 - 2³ = 139369381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139369381) 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, 40504 + ... + 43809.

It is an arithmetic number, because the mean of its divisors is an integer number (12647100).

Almost surely, 2^139369389 is an apocalyptic number.

139369389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

139369389 is a deficient number, since it is larger than the sum of its proper divisors (62984211).

139369389 is a wasteful number, since it uses less digits than its factorization.

139369389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84364.

The product of its digits is 944784, while the sum is 51.

The square root of 139369389 is about 11805.4813116620. The cubic root of 139369389 is about 518.4686071690.

The spelling of 139369389 in words is "one hundred thirty-nine million, three hundred sixty-nine thousand, three hundred eighty-nine".