45388139 has 2 divisors, whose sum is σ = 45388140. Its totient is φ = 45388138.

The previous prime is 45388129. The next prime is 45388157. The reversal of 45388139 is 93188354.

45388139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45388139 - 2⁸ = 45387883 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45388096 and 45388105.

It is not a weakly prime, because it can be changed into another prime (45388129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22694069 + 22694070.

It is an arithmetic number, because the mean of its divisors is an integer number (22694070).

Almost surely, 2^45388139 is an apocalyptic number.

45388139 is a deficient number, since it is larger than the sum of its proper divisors (1).

45388139 is an equidigital number, since it uses as much as digits as its factorization.

45388139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 45388139 is about 6737.0719901156. The cubic root of 45388139 is about 356.7090479621.

The spelling of 45388139 in words is "forty-five million, three hundred eighty-eight thousand, one hundred thirty-nine".