40194943 has 2 divisors, whose sum is σ = 40194944. Its totient is φ = 40194942.

The previous prime is 40194923. The next prime is 40194971. The reversal of 40194943 is 34949104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40194943 - 2⁵ = 40194911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40194899 and 40194908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40194923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20097471 + 20097472.

It is an arithmetic number, because the mean of its divisors is an integer number (20097472).

Almost surely, 2^40194943 is an apocalyptic number.

40194943 is a deficient number, since it is larger than the sum of its proper divisors (1).

40194943 is an equidigital number, since it uses as much as digits as its factorization.

40194943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 40194943 is about 6339.9481859081. The cubic root of 40194943 is about 342.5498689529.

The spelling of 40194943 in words is "forty million, one hundred ninety-four thousand, nine hundred forty-three".