138659007 has 8 divisors (see below), whose sum is σ = 189388080. Its totient is φ = 90184640.

The previous prime is 138658997. The next prime is 138659051. The reversal of 138659007 is 700956831.

138659007 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 a cyclic number.

It is not a de Polignac number, because 138659007 - 2¹² = 138654911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138659057) 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, 563532 + ... + 563777.

It is an arithmetic number, because the mean of its divisors is an integer number (23673510).

Almost surely, 2^138659007 is an apocalyptic number.

138659007 is a deficient number, since it is larger than the sum of its proper divisors (50729073).

138659007 is a wasteful number, since it uses less digits than its factorization.

138659007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127353.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 138659007 is about 11775.3559181878. The cubic root of 138659007 is about 517.5862079538.

The spelling of 138659007 in words is "one hundred thirty-eight million, six hundred fifty-nine thousand, seven".