138825769 has 8 divisors (see below), whose sum is σ = 146270592. Its totient is φ = 131498400.

The previous prime is 138825763. The next prime is 138825773. The reversal of 138825769 is 967528831.

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 138825769 - 2⁵ = 138825737 is a prime.

It is a super-2 number, since 2×138825769² = 38545188276882722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138825763) 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, 26932 + ... + 31669.

It is an arithmetic number, because the mean of its divisors is an integer number (18283824).

Almost surely, 2^138825769 is an apocalyptic number.

It is an amenable number.

138825769 is a deficient number, since it is larger than the sum of its proper divisors (7444823).

138825769 is a wasteful number, since it uses less digits than its factorization.

138825769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58727.

The product of its digits is 725760, while the sum is 49.

The square root of 138825769 is about 11782.4347653615. The cubic root of 138825769 is about 517.7936211700.

The spelling of 138825769 in words is "one hundred thirty-eight million, eight hundred twenty-five thousand, seven hundred sixty-nine".