73146239 has 2 divisors, whose sum is σ = 73146240. Its totient is φ = 73146238.

The previous prime is 73146221. The next prime is 73146247. The reversal of 73146239 is 93264137.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73146239 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 73146199 and 73146208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73142239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36573119 + 36573120.

It is an arithmetic number, because the mean of its divisors is an integer number (36573120).

Almost surely, 2^73146239 is an apocalyptic number.

73146239 is a deficient number, since it is larger than the sum of its proper divisors (1).

73146239 is an equidigital number, since it uses as much as digits as its factorization.

73146239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 73146239 is about 8552.5574537678. The cubic root of 73146239 is about 418.2128122027.

The spelling of 73146239 in words is "seventy-three million, one hundred forty-six thousand, two hundred thirty-nine".