138884207 has 8 divisors (see below), whose sum is σ = 173154432. Its totient is φ = 108221400.

The previous prime is 138884183. The next prime is 138884267. The reversal of 138884207 is 702488831.

138884207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138884207 - 2⁸ = 138883951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138884267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901769 + ... + 901922.

It is an arithmetic number, because the mean of its divisors is an integer number (21644304).

Almost surely, 2^138884207 is an apocalyptic number.

138884207 is a deficient number, since it is larger than the sum of its proper divisors (34270225).

138884207 is a wasteful number, since it uses less digits than its factorization.

138884207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803709.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 138884207 is about 11784.9143823789. The cubic root of 138884207 is about 517.8662651733.

The spelling of 138884207 in words is "one hundred thirty-eight million, eight hundred eighty-four thousand, two hundred seven".