40537249 has 2 divisors, whose sum is σ = 40537250. Its totient is φ = 40537248.

The previous prime is 40537229. The next prime is 40537297. The reversal of 40537249 is 94273504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29778849 + 10758400 = 5457^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 40537249 - 2⁷ = 40537121 is a prime.

It is not a weakly prime, because it can be changed into another prime (40537219) 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, 20268624 + 20268625.

It is an arithmetic number, because the mean of its divisors is an integer number (20268625).

Almost surely, 2^40537249 is an apocalyptic number.

It is an amenable number.

40537249 is a deficient number, since it is larger than the sum of its proper divisors (1).

40537249 is an equidigital number, since it uses as much as digits as its factorization.

40537249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 40537249 is about 6366.8869159111. The cubic root of 40537249 is about 343.5195231247.

It can be divided in two parts, 40 and 537249, that added together give a square (537289 = 733²).

The spelling of 40537249 in words is "forty million, five hundred thirty-seven thousand, two hundred forty-nine".