138822697 has 16 divisors (see below), whose sum is σ = 159343632. Its totient is φ = 119808000.

The previous prime is 138822689. The next prime is 138822751. The reversal of 138822697 is 796228831.

It can be written as a sum of positive squares in 8 ways, for example, as 25847056 + 112975641 = 5084^2 + 10629^2 .

It is not a de Polignac number, because 138822697 - 2³ = 138822689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138822667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32697 + ... + 36697.

It is an arithmetic number, because the mean of its divisors is an integer number (9958977).

Almost surely, 2^138822697 is an apocalyptic number.

138822697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

138822697 is a deficient number, since it is larger than the sum of its proper divisors (20520935).

138822697 is a wasteful number, since it uses less digits than its factorization.

138822697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188.

The product of its digits is 290304, while the sum is 46.

The square root of 138822697 is about 11782.3044010923. The cubic root of 138822697 is about 517.7898018173.

The spelling of 138822697 in words is "one hundred thirty-eight million, eight hundred twenty-two thousand, six hundred ninety-seven".