139492163 has 2 divisors, whose sum is σ = 139492164. Its totient is φ = 139492162.

The previous prime is 139492141. The next prime is 139492187. The reversal of 139492163 is 361294931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139492163 - 2⁸ = 139491907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139492763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69746081 + 69746082.

It is an arithmetic number, because the mean of its divisors is an integer number (69746082).

Almost surely, 2^139492163 is an apocalyptic number.

139492163 is a deficient number, since it is larger than the sum of its proper divisors (1).

139492163 is an equidigital number, since it uses as much as digits as its factorization.

139492163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 139492163 is about 11810.6800396929. The cubic root of 139492163 is about 518.6208064977.

The spelling of 139492163 in words is "one hundred thirty-nine million, four hundred ninety-two thousand, one hundred sixty-three".