139073207 has 16 divisors (see below), whose sum is σ = 174074880. Its totient is φ = 108166752.

The previous prime is 139073201. The next prime is 139073227. The reversal of 139073207 is 702370931.

It is a cyclic number.

It is not a de Polignac number, because 139073207 - 2²² = 134878903 is a prime.

It is a super-3 number, since 3×139073207³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139073201) 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 15 ways as a sum of consecutive naturals, for example, 7583 + ... + 18320.

It is an arithmetic number, because the mean of its divisors is an integer number (10879680).

Almost surely, 2^139073207 is an apocalyptic number.

139073207 is a deficient number, since it is larger than the sum of its proper divisors (35001673).

139073207 is a wasteful number, since it uses less digits than its factorization.

139073207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25982.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 139073207 is about 11792.9303822248. The cubic root of 139073207 is about 518.1010707508.

The spelling of 139073207 in words is "one hundred thirty-nine million, seventy-three thousand, two hundred seven".