139067297 has 2 divisors, whose sum is σ = 139067298. Its totient is φ = 139067296.

The previous prime is 139067287. The next prime is 139067311. The reversal of 139067297 is 792760931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124634896 + 14432401 = 11164^2 + 3799^2 .

It is an emirp because it is prime and its reverse (792760931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139067297 - 2⁴ = 139067281 is a prime.

It is not a weakly prime, because it can be changed into another prime (139067207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69533648 + 69533649.

It is an arithmetic number, because the mean of its divisors is an integer number (69533649).

Almost surely, 2^139067297 is an apocalyptic number.

It is an amenable number.

139067297 is a deficient number, since it is larger than the sum of its proper divisors (1).

139067297 is an equidigital number, since it uses as much as digits as its factorization.

139067297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 139067297 is about 11792.6798057100. The cubic root of 139067297 is about 518.0937316408.

The spelling of 139067297 in words is "one hundred thirty-nine million, sixty-seven thousand, two hundred ninety-seven".