139270097 has 2 divisors, whose sum is σ = 139270098. Its totient is φ = 139270096.

The previous prime is 139270091. The next prime is 139270123. The reversal of 139270097 is 790072931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136632721 + 2637376 = 11689^2 + 1624^2 .

It is a cyclic number.

It is not a de Polignac number, because 139270097 - 2¹⁶ = 139204561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139270097.

It is not a weakly prime, because it can be changed into another prime (139270091) 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, 69635048 + 69635049.

It is an arithmetic number, because the mean of its divisors is an integer number (69635049).

Almost surely, 2^139270097 is an apocalyptic number.

It is an amenable number.

139270097 is a deficient number, since it is larger than the sum of its proper divisors (1).

139270097 is an equidigital number, since it uses as much as digits as its factorization.

139270097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 139270097 is about 11801.2752277031. The cubic root of 139270097 is about 518.3454523990.

The spelling of 139270097 in words is "one hundred thirty-nine million, two hundred seventy thousand, ninety-seven".