139665027 has 4 divisors (see below), whose sum is σ = 186220040. Its totient is φ = 93110016.

The previous prime is 139665007. The next prime is 139665037. The reversal of 139665027 is 720566931.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 139665027 - 2¹⁹ = 139140739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139665007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23277502 + ... + 23277507.

It is an arithmetic number, because the mean of its divisors is an integer number (46555010).

Almost surely, 2^139665027 is an apocalyptic number.

139665027 is a deficient number, since it is larger than the sum of its proper divisors (46555013).

139665027 is an equidigital number, since it uses as much as digits as its factorization.

139665027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46555012.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 139665027 is about 11817.9958960900. The cubic root of 139665027 is about 518.8349496144.

The spelling of 139665027 in words is "one hundred thirty-nine million, six hundred sixty-five thousand, twenty-seven".