139221059 has 2 divisors, whose sum is σ = 139221060. Its totient is φ = 139221058.

The previous prime is 139220993. The next prime is 139221067. The reversal of 139221059 is 950122931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139221059 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (139221079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69610529 + 69610530.

It is an arithmetic number, because the mean of its divisors is an integer number (69610530).

Almost surely, 2^139221059 is an apocalyptic number.

139221059 is a deficient number, since it is larger than the sum of its proper divisors (1).

139221059 is an equidigital number, since it uses as much as digits as its factorization.

139221059 is an evil number, because the sum of its binary digits is even.

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

The square root of 139221059 is about 11799.1973879582. The cubic root of 139221059 is about 518.2846075400.

The spelling of 139221059 in words is "one hundred thirty-nine million, two hundred twenty-one thousand, fifty-nine".