138750983 has 4 divisors (see below), whose sum is σ = 158572560. Its totient is φ = 118929408.

The previous prime is 138750971. The next prime is 138751001. The reversal of 138750983 is 389057831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389057831 = 1621 ⋅240011.

It is a cyclic number.

It is not a de Polignac number, because 138750983 - 2⁴ = 138750967 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 (138752983) 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, 9910778 + ... + 9910791.

It is an arithmetic number, because the mean of its divisors is an integer number (39643140).

Almost surely, 2^138750983 is an apocalyptic number.

138750983 is a deficient number, since it is larger than the sum of its proper divisors (19821577).

138750983 is an equidigital number, since it uses as much as digits as its factorization.

138750983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19821576.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 138750983 is about 11779.2607153420. The cubic root of 138750983 is about 517.7006253003.

The spelling of 138750983 in words is "one hundred thirty-eight million, seven hundred fifty thousand, nine hundred eighty-three".