139694963 has 2 divisors, whose sum is σ = 139694964. Its totient is φ = 139694962.

The previous prime is 139694953. The next prime is 139694969. The reversal of 139694963 is 369496931.

139694963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (369496931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139694963 - 2¹⁸ = 139432819 is a prime.

It is equal to p_7895876 and since 139694963 and 7895876 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (139694969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69847481 + 69847482.

It is an arithmetic number, because the mean of its divisors is an integer number (69847482).

Almost surely, 2^139694963 is an apocalyptic number.

139694963 is a deficient number, since it is larger than the sum of its proper divisors (1).

139694963 is an equidigital number, since it uses as much as digits as its factorization.

139694963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 50.

The square root of 139694963 is about 11819.2623712311. The cubic root of 139694963 is about 518.8720162393.

The spelling of 139694963 in words is "one hundred thirty-nine million, six hundred ninety-four thousand, nine hundred sixty-three".