139004729 has 2 divisors, whose sum is σ = 139004730. Its totient is φ = 139004728.

The previous prime is 139004717. The next prime is 139004737. The reversal of 139004729 is 927400931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110670400 + 28334329 = 10520^2 + 5323^2 .

It is an emirp because it is prime and its reverse (927400931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139004729 - 2¹⁶ = 138939193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139004329) 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, 69502364 + 69502365.

It is an arithmetic number, because the mean of its divisors is an integer number (69502365).

Almost surely, 2^139004729 is an apocalyptic number.

It is an amenable number.

139004729 is a deficient number, since it is larger than the sum of its proper divisors (1).

139004729 is an equidigital number, since it uses as much as digits as its factorization.

139004729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 139004729 is about 11790.0266751183. The cubic root of 139004729 is about 518.0160211798.

The spelling of 139004729 in words is "one hundred thirty-nine million, four thousand, seven hundred twenty-nine".