139996727 has 6 divisors (see below), whose sum is σ = 151594272. Its totient is φ = 129227592.

The previous prime is 139996721. The next prime is 139996739. The reversal of 139996727 is 727699931.

It is a happy number.

It is not a de Polignac number, because 139996727 - 2⁴ = 139996711 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 (139996721) 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 5 ways as a sum of consecutive naturals, for example, 414023 + ... + 414360.

It is an arithmetic number, because the mean of its divisors is an integer number (25265712).

Almost surely, 2^139996727 is an apocalyptic number.

139996727 is a deficient number, since it is larger than the sum of its proper divisors (11597545).

139996727 is an equidigital number, since it uses as much as digits as its factorization.

139996727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828409 (or 828396 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 53.

The square root of 139996727 is about 11832.0212558971. The cubic root of 139996727 is about 519.2453637171.

The spelling of 139996727 in words is "one hundred thirty-nine million, nine hundred ninety-six thousand, seven hundred twenty-seven".