394200043 has 2 divisors, whose sum is σ = 394200044. Its totient is φ = 394200042.

The previous prime is 394199983. The next prime is 394200047. The reversal of 394200043 is 340002493.

It is a strong prime.

It is an emirp because it is prime and its reverse (340002493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394200043 - 2¹⁷ = 394068971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 394199990 and 394200017.

It is not a weakly prime, because it can be changed into another prime (394200047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197100021 + 197100022.

It is an arithmetic number, because the mean of its divisors is an integer number (197100022).

Almost surely, 2^394200043 is an apocalyptic number.

394200043 is a deficient number, since it is larger than the sum of its proper divisors (1).

394200043 is an equidigital number, since it uses as much as digits as its factorization.

394200043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 394200043 is about 19854.4716122087. The cubic root of 394200043 is about 733.2277433142.

The spelling of 394200043 in words is "three hundred ninety-four million, two hundred thousand, forty-three".