168413239 has 2 divisors, whose sum is σ = 168413240. Its totient is φ = 168413238.

The previous prime is 168413209. The next prime is 168413257. The reversal of 168413239 is 932314861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168413239 - 2¹⁹ = 167888951 is a prime.

It is a super-2 number, since 2×168413239² = 56726038140942242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168413198 and 168413207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168413209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84206619 + 84206620.

It is an arithmetic number, because the mean of its divisors is an integer number (84206620).

Almost surely, 2^168413239 is an apocalyptic number.

168413239 is a deficient number, since it is larger than the sum of its proper divisors (1).

168413239 is an equidigital number, since it uses as much as digits as its factorization.

168413239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 168413239 is about 12977.4126465949. The cubic root of 168413239 is about 552.2368835135.

The spelling of 168413239 in words is "one hundred sixty-eight million, four hundred thirteen thousand, two hundred thirty-nine".