40259449 has 2 divisors, whose sum is σ = 40259450. Its totient is φ = 40259448.

The previous prime is 40259447. The next prime is 40259467. The reversal of 40259449 is 94495204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 15657849 = 4960^2 + 3957^2 .

It is a cyclic number.

It is not a de Polignac number, because 40259449 - 2¹ = 40259447 is a prime.

Together with 40259447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40259447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20129724 + 20129725.

It is an arithmetic number, because the mean of its divisors is an integer number (20129725).

Almost surely, 2^40259449 is an apocalyptic number.

It is an amenable number.

40259449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40259449 is an equidigital number, since it uses as much as digits as its factorization.

40259449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 40259449 is about 6345.0334120476. The cubic root of 40259449 is about 342.7330156404.

The spelling of 40259449 in words is "forty million, two hundred fifty-nine thousand, four hundred forty-nine".