40043827 has 2 divisors, whose sum is σ = 40043828. Its totient is φ = 40043826.

The previous prime is 40043821. The next prime is 40043863. The reversal of 40043827 is 72834004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40043827 - 2¹⁹ = 39519539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40043795 and 40043804.

It is not a weakly prime, because it can be changed into another prime (40043821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021913 + 20021914.

It is an arithmetic number, because the mean of its divisors is an integer number (20021914).

Almost surely, 2^40043827 is an apocalyptic number.

40043827 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043827 is an equidigital number, since it uses as much as digits as its factorization.

40043827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40043827 is about 6328.0192003501. The cubic root of 40043827 is about 342.1200489376.

The spelling of 40043827 in words is "forty million, forty-three thousand, eight hundred twenty-seven".