173800139 has 2 divisors, whose sum is σ = 173800140. Its totient is φ = 173800138.

The previous prime is 173800127. The next prime is 173800141. The reversal of 173800139 is 931008371.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173800139 is a prime.

Together with 173800141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (173800169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86900069 + 86900070.

It is an arithmetic number, because the mean of its divisors is an integer number (86900070).

Almost surely, 2^173800139 is an apocalyptic number.

173800139 is a deficient number, since it is larger than the sum of its proper divisors (1).

173800139 is an equidigital number, since it uses as much as digits as its factorization.

173800139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 173800139 is about 13183.3280699526. The cubic root of 173800139 is about 558.0631846934.

The spelling of 173800139 in words is "one hundred seventy-three million, eight hundred thousand, one hundred thirty-nine".