139865353 has 2 divisors, whose sum is σ = 139865354. Its totient is φ = 139865352.

The previous prime is 139865329. The next prime is 139865387. The reversal of 139865353 is 353568931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 50808384 = 9437^2 + 7128^2 .

It is a cyclic number.

It is not a de Polignac number, because 139865353 - 2⁹ = 139864841 is a prime.

It is not a weakly prime, because it can be changed into another prime (139865303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69932676 + 69932677.

It is an arithmetic number, because the mean of its divisors is an integer number (69932677).

Almost surely, 2^139865353 is an apocalyptic number.

It is an amenable number.

139865353 is a deficient number, since it is larger than the sum of its proper divisors (1).

139865353 is an equidigital number, since it uses as much as digits as its factorization.

139865353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 43.

The square root of 139865353 is about 11826.4683232147. The cubic root of 139865353 is about 519.0828916105.

The spelling of 139865353 in words is "one hundred thirty-nine million, eight hundred sixty-five thousand, three hundred fifty-three".