139881727 has 4 divisors (see below), whose sum is σ = 140150736. Its totient is φ = 139612720.

The previous prime is 139881701. The next prime is 139881733. The reversal of 139881727 is 727188931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727188931 = 7 ⋅103884133.

It is a cyclic number.

It is not a de Polignac number, because 139881727 - 2¹¹ = 139879679 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 (139881757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133723 + ... + 134764.

It is an arithmetic number, because the mean of its divisors is an integer number (35037684).

Almost surely, 2^139881727 is an apocalyptic number.

139881727 is a deficient number, since it is larger than the sum of its proper divisors (269009).

139881727 is an equidigital number, since it uses as much as digits as its factorization.

139881727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269008.

The product of its digits is 169344, while the sum is 46.

The square root of 139881727 is about 11827.1605637194. The cubic root of 139881727 is about 519.1031471191.

It can be divided in two parts, 139881 and 727, that added together give a cube (140608 = 52³).

The spelling of 139881727 in words is "one hundred thirty-nine million, eight hundred eighty-one thousand, seven hundred twenty-seven".