40304413 has 2 divisors, whose sum is σ = 40304414. Its totient is φ = 40304412.

The previous prime is 40304401. The next prime is 40304419. The reversal of 40304413 is 31440304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39463524 + 840889 = 6282^2 + 917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40304413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40304419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20152206 + 20152207.

It is an arithmetic number, because the mean of its divisors is an integer number (20152207).

Almost surely, 2^40304413 is an apocalyptic number.

It is an amenable number.

40304413 is a deficient number, since it is larger than the sum of its proper divisors (1).

40304413 is an equidigital number, since it uses as much as digits as its factorization.

40304413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40304413 is about 6348.5756670296. The cubic root of 40304413 is about 342.8605626230.

Adding to 40304413 its reverse (31440304), we get a palindrome (71744717).

The spelling of 40304413 in words is "forty million, three hundred four thousand, four hundred thirteen".