147993173 has 2 divisors, whose sum is σ = 147993174. Its totient is φ = 147993172.

The previous prime is 147993127. The next prime is 147993187. The reversal of 147993173 is 371399741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115068529 + 32924644 = 10727^2 + 5738^2 .

It is an emirp because it is prime and its reverse (371399741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147993173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147993113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73996586 + 73996587.

It is an arithmetic number, because the mean of its divisors is an integer number (73996587).

Almost surely, 2^147993173 is an apocalyptic number.

It is an amenable number.

147993173 is a deficient number, since it is larger than the sum of its proper divisors (1).

147993173 is an equidigital number, since it uses as much as digits as its factorization.

147993173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 147993173 is about 12165.2444693890. The cubic root of 147993173 is about 528.9491138310.

The spelling of 147993173 in words is "one hundred forty-seven million, nine hundred ninety-three thousand, one hundred seventy-three".