399466339 has 2 divisors, whose sum is σ = 399466340. Its totient is φ = 399466338.

The previous prime is 399466337. The next prime is 399466349. The reversal of 399466339 is 933664993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399466339 - 2¹ = 399466337 is a prime.

Together with 399466337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (399466337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199733169 + 199733170.

It is an arithmetic number, because the mean of its divisors is an integer number (199733170).

Almost surely, 2^399466339 is an apocalyptic number.

399466339 is a deficient number, since it is larger than the sum of its proper divisors (1).

399466339 is an equidigital number, since it uses as much as digits as its factorization.

399466339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 52.

The square root of 399466339 is about 19986.6540221219. The cubic root of 399466339 is about 736.4784832435.

The spelling of 399466339 in words is "three hundred ninety-nine million, four hundred sixty-six thousand, three hundred thirty-nine".