40429841 has 2 divisors, whose sum is σ = 40429842. Its totient is φ = 40429840.

The previous prime is 40429817. The next prime is 40429849. The reversal of 40429841 is 14892404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39627025 + 802816 = 6295^2 + 896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40429841 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_2458247 and since 40429841 and 2458247 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 40429798 and 40429807.

It is not a weakly prime, because it can be changed into another prime (40429849) 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, 20214920 + 20214921.

It is an arithmetic number, because the mean of its divisors is an integer number (20214921).

Almost surely, 2^40429841 is an apocalyptic number.

It is an amenable number.

40429841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40429841 is an equidigital number, since it uses as much as digits as its factorization.

40429841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40429841 is about 6358.4464297500. The cubic root of 40429841 is about 343.2158568978.

The spelling of 40429841 in words is "forty million, four hundred twenty-nine thousand, eight hundred forty-one".