44731139 has 2 divisors, whose sum is σ = 44731140. Its totient is φ = 44731138.

The previous prime is 44731121. The next prime is 44731151. The reversal of 44731139 is 93113744.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44731139 is a prime.

It is not a weakly prime, because it can be changed into another prime (44731189) 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 as a sum of consecutive naturals, namely, 22365569 + 22365570.

It is an arithmetic number, because the mean of its divisors is an integer number (22365570).

Almost surely, 2^44731139 is an apocalyptic number.

44731139 is a deficient number, since it is larger than the sum of its proper divisors (1).

44731139 is an equidigital number, since it uses as much as digits as its factorization.

44731139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 44731139 is about 6688.1341942279. The cubic root of 44731139 is about 354.9795372719.

The spelling of 44731139 in words is "forty-four million, seven hundred thirty-one thousand, one hundred thirty-nine".