139277207 has 4 divisors (see below), whose sum is σ = 139429680. Its totient is φ = 139124736.

The previous prime is 139277191. The next prime is 139277249. The reversal of 139277207 is 702772931.

139277207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 139277207 - 2⁴ = 139277191 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 (139277267) 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, 74858 + ... + 76695.

It is an arithmetic number, because the mean of its divisors is an integer number (34857420).

Almost surely, 2^139277207 is an apocalyptic number.

139277207 is a deficient number, since it is larger than the sum of its proper divisors (152473).

139277207 is an equidigital number, since it uses as much as digits as its factorization.

139277207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152472.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 139277207 is about 11801.5764624901. The cubic root of 139277207 is about 518.3542730851.

The spelling of 139277207 in words is "one hundred thirty-nine million, two hundred seventy-seven thousand, two hundred seven".