423646339 has 2 divisors, whose sum is σ = 423646340. Its totient is φ = 423646338.

The previous prime is 423646309. The next prime is 423646343. The reversal of 423646339 is 933646324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423646339 - 2¹⁵ = 423613571 is a prime.

It is a super-3 number, since 3×423646339³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (423646309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211823169 + 211823170.

It is an arithmetic number, because the mean of its divisors is an integer number (211823170).

Almost surely, 2^423646339 is an apocalyptic number.

423646339 is a deficient number, since it is larger than the sum of its proper divisors (1).

423646339 is an equidigital number, since it uses as much as digits as its factorization.

423646339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 40.

The square root of 423646339 is about 20582.6708422401. The cubic root of 423646339 is about 751.0482166769.

The spelling of 423646339 in words is "four hundred twenty-three million, six hundred forty-six thousand, three hundred thirty-nine".