138789575 has 6 divisors (see below), whose sum is σ = 172099104. Its totient is φ = 111031640.

The previous prime is 138789569. The next prime is 138789583. The reversal of 138789575 is 575987831.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-138789575 is a prime.

It is a super-2 number, since 2×138789575² = 38525092257361250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2775767 + ... + 2775816.

It is an arithmetic number, because the mean of its divisors is an integer number (28683184).

Almost surely, 2^138789575 is an apocalyptic number.

138789575 is a deficient number, since it is larger than the sum of its proper divisors (33309529).

138789575 is an equidigital number, since it uses as much as digits as its factorization.

138789575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551593 (or 5551588 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 53.

The square root of 138789575 is about 11780.8987348165. The cubic root of 138789575 is about 517.7486183549.

The spelling of 138789575 in words is "one hundred thirty-eight million, seven hundred eighty-nine thousand, five hundred seventy-five".