427166239 has 2 divisors, whose sum is σ = 427166240. Its totient is φ = 427166238.

The previous prime is 427166203. The next prime is 427166279. The reversal of 427166239 is 932661724.

It is a happy number.

It is an a-pointer prime, because the next prime (427166279) can be obtained adding 427166239 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427166239 - 2⁷ = 427166111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427166279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213583119 + 213583120.

It is an arithmetic number, because the mean of its divisors is an integer number (213583120).

Almost surely, 2^427166239 is an apocalyptic number.

427166239 is a deficient number, since it is larger than the sum of its proper divisors (1).

427166239 is an equidigital number, since it uses as much as digits as its factorization.

427166239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 427166239 is about 20668.0003628798. Note that the first 3 decimals coincide. The cubic root of 427166239 is about 753.1225307312.

The spelling of 427166239 in words is "four hundred twenty-seven million, one hundred sixty-six thousand, two hundred thirty-nine".