139694683 has 2 divisors, whose sum is σ = 139694684. Its totient is φ = 139694682.

The previous prime is 139694657. The next prime is 139694689. The reversal of 139694683 is 386496931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139694683 - 2⁵ = 139694651 is a prime.

It is not a weakly prime, because it can be changed into another prime (139694689) 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, 69847341 + 69847342.

It is an arithmetic number, because the mean of its divisors is an integer number (69847342).

Almost surely, 2^139694683 is an apocalyptic number.

139694683 is a deficient number, since it is larger than the sum of its proper divisors (1).

139694683 is an equidigital number, since it uses as much as digits as its factorization.

139694683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 139694683 is about 11819.2505261544. The cubic root of 139694683 is about 518.8716695690.

The spelling of 139694683 in words is "one hundred thirty-nine million, six hundred ninety-four thousand, six hundred eighty-three".