396239443 has 2 divisors, whose sum is σ = 396239444. Its totient is φ = 396239442.

The previous prime is 396239399. The next prime is 396239479. The reversal of 396239443 is 344932693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396239443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396239443.

It is not a weakly prime, because it can be changed into another prime (396239843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198119721 + 198119722.

It is an arithmetic number, because the mean of its divisors is an integer number (198119722).

Almost surely, 2^396239443 is an apocalyptic number.

396239443 is a deficient number, since it is larger than the sum of its proper divisors (1).

396239443 is an equidigital number, since it uses as much as digits as its factorization.

396239443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 43.

The square root of 396239443 is about 19905.7640647125. The cubic root of 396239443 is about 734.4900240123.

The spelling of 396239443 in words is "three hundred ninety-six million, two hundred thirty-nine thousand, four hundred forty-three".