139025291 has 2 divisors, whose sum is σ = 139025292. Its totient is φ = 139025290.

The previous prime is 139025273. The next prime is 139025309. The reversal of 139025291 is 192520931.

It is a balanced prime because it is at equal distance from previous prime (139025273) and next prime (139025309).

It is an emirp because it is prime and its reverse (192520931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139025291 - 2¹⁴ = 139008907 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139025221) 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, 69512645 + 69512646.

It is an arithmetic number, because the mean of its divisors is an integer number (69512646).

Almost surely, 2^139025291 is an apocalyptic number.

139025291 is a deficient number, since it is larger than the sum of its proper divisors (1).

139025291 is an equidigital number, since it uses as much as digits as its factorization.

139025291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 139025291 is about 11790.8986510783. The cubic root of 139025291 is about 518.0415620861.

The spelling of 139025291 in words is "one hundred thirty-nine million, twenty-five thousand, two hundred ninety-one".