139695653 has 2 divisors, whose sum is σ = 139695654. Its totient is φ = 139695652.

The previous prime is 139695643. The next prime is 139695659. The reversal of 139695653 is 356596931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69923044 + 69772609 = 8362^2 + 8353^2 .

It is a cyclic number.

It is not a de Polignac number, because 139695653 - 2²⁴ = 122918437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139695598 and 139695607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139695659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69847826 + 69847827.

It is an arithmetic number, because the mean of its divisors is an integer number (69847827).

Almost surely, 2^139695653 is an apocalyptic number.

It is an amenable number.

139695653 is a deficient number, since it is larger than the sum of its proper divisors (1).

139695653 is an equidigital number, since it uses as much as digits as its factorization.

139695653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100, while the sum is 47.

The square root of 139695653 is about 11819.2915608339. The cubic root of 139695653 is about 518.8728705318.

The spelling of 139695653 in words is "one hundred thirty-nine million, six hundred ninety-five thousand, six hundred fifty-three".