138558883 has 4 divisors (see below), whose sum is σ = 138790800. Its totient is φ = 138326968.

The previous prime is 138558863. The next prime is 138558899. The reversal of 138558883 is 388855831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138558883 - 2⁵ = 138558851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138558863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115060 + ... + 116257.

It is an arithmetic number, because the mean of its divisors is an integer number (34697700).

Almost surely, 2^138558883 is an apocalyptic number.

138558883 is a deficient number, since it is larger than the sum of its proper divisors (231917).

138558883 is an equidigital number, since it uses as much as digits as its factorization.

138558883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231916.

The product of its digits is 921600, while the sum is 49.

The square root of 138558883 is about 11771.1037290477. The cubic root of 138558883 is about 517.4615970320.

The spelling of 138558883 in words is "one hundred thirty-eight million, five hundred fifty-eight thousand, eight hundred eighty-three".