138283039 has 4 divisors (see below), whose sum is σ = 139652280. Its totient is φ = 136913800.

The previous prime is 138283021. The next prime is 138283051. The reversal of 138283039 is 930382831.

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 138283039 - 2¹⁵ = 138250271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138282989 and 138283007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138283069) 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, 684469 + ... + 684670.

It is an arithmetic number, because the mean of its divisors is an integer number (34913070).

Almost surely, 2^138283039 is an apocalyptic number.

138283039 is a deficient number, since it is larger than the sum of its proper divisors (1369241).

138283039 is a wasteful number, since it uses less digits than its factorization.

138283039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369240.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 138283039 is about 11759.3808935675. The cubic root of 138283039 is about 517.1179801756.

The spelling of 138283039 in words is "one hundred thirty-eight million, two hundred eighty-three thousand, thirty-nine".