139012579 has 2 divisors, whose sum is σ = 139012580. Its totient is φ = 139012578.

The previous prime is 139012567. The next prime is 139012597. The reversal of 139012579 is 975210931.

Together with next prime (139012597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (975210931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139012579 - 2⁵ = 139012547 is a prime.

It is equal to p_7859503 and since 139012579 and 7859503 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (139012079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69506289 + 69506290.

It is an arithmetic number, because the mean of its divisors is an integer number (69506290).

Almost surely, 2^139012579 is an apocalyptic number.

139012579 is a deficient number, since it is larger than the sum of its proper divisors (1).

139012579 is an equidigital number, since it uses as much as digits as its factorization.

139012579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 139012579 is about 11790.3595789102. The cubic root of 139012579 is about 518.0257722850.

The spelling of 139012579 in words is "one hundred thirty-nine million, twelve thousand, five hundred seventy-nine".