40412549 has 2 divisors, whose sum is σ = 40412550. Its totient is φ = 40412548.

The previous prime is 40412531. The next prime is 40412551. The reversal of 40412549 is 94521404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31561924 + 8850625 = 5618^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 40412549 - 2¹² = 40408453 is a prime.

Together with 40412551, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2457272 and since 40412549 and 2457272 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40412569) 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, 20206274 + 20206275.

It is an arithmetic number, because the mean of its divisors is an integer number (20206275).

Almost surely, 2^40412549 is an apocalyptic number.

It is an amenable number.

40412549 is a deficient number, since it is larger than the sum of its proper divisors (1).

40412549 is an equidigital number, since it uses as much as digits as its factorization.

40412549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 40412549 is about 6357.0865182094. The cubic root of 40412549 is about 343.1669183351.

The spelling of 40412549 in words is "forty million, four hundred twelve thousand, five hundred forty-nine".