138593469 has 32 divisors (see below), whose sum is σ = 233349120. Its totient is φ = 71292672.

The previous prime is 138593437. The next prime is 138593479. The reversal of 138593469 is 964395831.

It is not a de Polignac number, because 138593469 - 2⁵ = 138593437 is a prime.

It is a super-2 number, since 2×138593469² = 38416299298907922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138593479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229 + ... + 16650.

It is an arithmetic number, because the mean of its divisors is an integer number (7292160).

Almost surely, 2^138593469 is an apocalyptic number.

It is an amenable number.

138593469 is a deficient number, since it is larger than the sum of its proper divisors (94755651).

138593469 is a wasteful number, since it uses less digits than its factorization.

138593469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929.

The product of its digits is 699840, while the sum is 48.

The square root of 138593469 is about 11772.5727434576. The cubic root of 138593469 is about 517.5046483748.

The spelling of 138593469 in words is "one hundred thirty-eight million, five hundred ninety-three thousand, four hundred sixty-nine".