138075969 has 8 divisors (see below), whose sum is σ = 192105792. Its totient is φ = 88048400.

The previous prime is 138075947. The next prime is 138075979. The reversal of 138075969 is 969570831.

138075969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138075969 - 2⁵ = 138075937 is a prime.

It is a super-2 number, since 2×138075969² = 38129946430577922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138075919) 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, 1000482 + ... + 1000619.

It is an arithmetic number, because the mean of its divisors is an integer number (24013224).

Almost surely, 2^138075969 is an apocalyptic number.

It is an amenable number.

138075969 is a deficient number, since it is larger than the sum of its proper divisors (54029823).

138075969 is a wasteful number, since it uses less digits than its factorization.

138075969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001127.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 138075969 is about 11750.5731349581. The cubic root of 138075969 is about 516.8597342048.

The spelling of 138075969 in words is "one hundred thirty-eight million, seventy-five thousand, nine hundred sixty-nine".