4139129 has 2 divisors, whose sum is σ = 4139130. Its totient is φ = 4139128.

The previous prime is 4139119. The next prime is 4139147. The reversal of 4139129 is 9219314.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 139129 = 2000^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 4139129 - 2¹⁶ = 4073593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4139119) 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, 2069564 + 2069565.

It is an arithmetic number, because the mean of its divisors is an integer number (2069565).

Almost surely, 2^4139129 is an apocalyptic number.

It is an amenable number.

4139129 is a deficient number, since it is larger than the sum of its proper divisors (1).

4139129 is an equidigital number, since it uses as much as digits as its factorization.

4139129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 4139129 is about 2034.4849471058. The cubic root of 4139129 is about 160.5596159265.

It can be divided in two parts, 4 and 139129, that multiplied together give a square (556516 = 746²).

The spelling of 4139129 in words is "four million, one hundred thirty-nine thousand, one hundred twenty-nine".