39449727139 has 2 divisors, whose sum is σ = 39449727140. Its totient is φ = 39449727138.

The previous prime is 39449727131. The next prime is 39449727157. The reversal of 39449727139 is 93172794493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39449727139 - 2³ = 39449727131 is a prime.

It is not a weakly prime, because it can be changed into another prime (39449727131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19724863569 + 19724863570.

It is an arithmetic number, because the mean of its divisors is an integer number (19724863570).

Almost surely, 2^39449727139 is an apocalyptic number.

39449727139 is a deficient number, since it is larger than the sum of its proper divisors (1).

39449727139 is an equidigital number, since it uses as much as digits as its factorization.

39449727139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 58.

The spelling of 39449727139 in words is "thirty-nine billion, four hundred forty-nine million, seven hundred twenty-seven thousand, one hundred thirty-nine".