139463963 has 2 divisors, whose sum is σ = 139463964. Its totient is φ = 139463962.

The previous prime is 139463911. The next prime is 139463969. The reversal of 139463963 is 369364931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139463963 is a prime.

It is not a weakly prime, because it can be changed into another prime (139463969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69731981 + 69731982.

It is an arithmetic number, because the mean of its divisors is an integer number (69731982).

Almost surely, 2^139463963 is an apocalyptic number.

139463963 is a deficient number, since it is larger than the sum of its proper divisors (1).

139463963 is an equidigital number, since it uses as much as digits as its factorization.

139463963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 44.

The square root of 139463963 is about 11809.4861446212. The cubic root of 139463963 is about 518.5858556873.

The spelling of 139463963 in words is "one hundred thirty-nine million, four hundred sixty-three thousand, nine hundred sixty-three".