139596427 has 2 divisors, whose sum is σ = 139596428. Its totient is φ = 139596426.

The previous prime is 139596421. The next prime is 139596451. The reversal of 139596427 is 724695931.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (724695931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139596427 - 2²⁷ = 5378699 is a prime.

It is not a weakly prime, because it can be changed into another prime (139596421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69798213 + 69798214.

It is an arithmetic number, because the mean of its divisors is an integer number (69798214).

Almost surely, 2^139596427 is an apocalyptic number.

139596427 is a deficient number, since it is larger than the sum of its proper divisors (1).

139596427 is an equidigital number, since it uses as much as digits as its factorization.

139596427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 139596427 is about 11815.0931862597. The cubic root of 139596427 is about 518.7499894131.

The spelling of 139596427 in words is "one hundred thirty-nine million, five hundred ninety-six thousand, four hundred twenty-seven".