139683729 has 8 divisors (see below), whose sum is σ = 186354432. Its totient is φ = 93067760.

The previous prime is 139683727. The next prime is 139683787. The reversal of 139683729 is 927386931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139683729 - 2¹ = 139683727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139683721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7302 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (23294304).

Almost surely, 2^139683729 is an apocalyptic number.

It is an amenable number.

139683729 is a deficient number, since it is larger than the sum of its proper divisors (46670703).

139683729 is a wasteful number, since it uses less digits than its factorization.

139683729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367.

The product of its digits is 489888, while the sum is 48.

The square root of 139683729 is about 11818.7871205128. The cubic root of 139683729 is about 518.8581069702.

The spelling of 139683729 in words is "one hundred thirty-nine million, six hundred eighty-three thousand, seven hundred twenty-nine".