399246220343 has 2 divisors, whose sum is σ = 399246220344. Its totient is φ = 399246220342.

The previous prime is 399246220339. The next prime is 399246220459. The reversal of 399246220343 is 343022642993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399246220343 - 2² = 399246220339 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399246220313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199623110171 + 199623110172.

It is an arithmetic number, because the mean of its divisors is an integer number (199623110172).

Almost surely, 2^399246220343 is an apocalyptic number.

399246220343 is a deficient number, since it is larger than the sum of its proper divisors (1).

399246220343 is an equidigital number, since it uses as much as digits as its factorization.

399246220343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 47.

The spelling of 399246220343 in words is "three hundred ninety-nine billion, two hundred forty-six million, two hundred twenty thousand, three hundred forty-three".