138956483 has 4 divisors (see below), whose sum is σ = 139021488. Its totient is φ = 138891480.

The previous prime is 138956479. The next prime is 138956509. The reversal of 138956483 is 384659831.

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 138956483 - 2² = 138956479 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138956413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29183 + ... + 33608.

It is an arithmetic number, because the mean of its divisors is an integer number (34755372).

Almost surely, 2^138956483 is an apocalyptic number.

138956483 is a deficient number, since it is larger than the sum of its proper divisors (65005).

138956483 is an equidigital number, since it uses as much as digits as its factorization.

138956483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65004.

The product of its digits is 622080, while the sum is 47.

The square root of 138956483 is about 11787.9804462003. The cubic root of 138956483 is about 517.9560829481.

The spelling of 138956483 in words is "one hundred thirty-eight million, nine hundred fifty-six thousand, four hundred eighty-three".