138822737 has 4 divisors (see below), whose sum is σ = 138862080. Its totient is φ = 138783396.

The previous prime is 138822689. The next prime is 138822751. The reversal of 138822737 is 737228831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138822737 - 2¹⁰ = 138821713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138822694 and 138822703.

It is not an unprimeable number, because it can be changed into a prime (138822757) 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, 13793 + ... + 21630.

It is an arithmetic number, because the mean of its divisors is an integer number (34715520).

Almost surely, 2^138822737 is an apocalyptic number.

It is an amenable number.

138822737 is a deficient number, since it is larger than the sum of its proper divisors (39343).

138822737 is an equidigital number, since it uses as much as digits as its factorization.

138822737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39342.

The product of its digits is 112896, while the sum is 41.

The square root of 138822737 is about 11782.3060985530. The cubic root of 138822737 is about 517.7898515488.

The spelling of 138822737 in words is "one hundred thirty-eight million, eight hundred twenty-two thousand, seven hundred thirty-seven".