399354383 has 2 divisors, whose sum is σ = 399354384. Its totient is φ = 399354382.

The previous prime is 399354341. The next prime is 399354409. The reversal of 399354383 is 383453993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399354383 - 2⁸ = 399354127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399354323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199677191 + 199677192.

It is an arithmetic number, because the mean of its divisors is an integer number (199677192).

Almost surely, 2^399354383 is an apocalyptic number.

399354383 is a deficient number, since it is larger than the sum of its proper divisors (1).

399354383 is an equidigital number, since it uses as much as digits as its factorization.

399354383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 47.

The square root of 399354383 is about 19983.8530569057. The cubic root of 399354383 is about 736.4096740339.

The spelling of 399354383 in words is "three hundred ninety-nine million, three hundred fifty-four thousand, three hundred eighty-three".