40990249 has 2 divisors, whose sum is σ = 40990250. Its totient is φ = 40990248.

The previous prime is 40990237. The next prime is 40990259. The reversal of 40990249 is 94209904.

40990249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 13741849 = 5220^2 + 3707^2 .

It is a cyclic number.

It is not a de Polignac number, because 40990249 - 2⁷ = 40990121 is a prime.

It is not a weakly prime, because it can be changed into another prime (40990259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20495124 + 20495125.

It is an arithmetic number, because the mean of its divisors is an integer number (20495125).

Almost surely, 2^40990249 is an apocalyptic number.

It is an amenable number.

40990249 is a deficient number, since it is larger than the sum of its proper divisors (1).

40990249 is an equidigital number, since it uses as much as digits as its factorization.

40990249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 40990249 is about 6402.3627669791. The cubic root of 40990249 is about 344.7943856381.

The spelling of 40990249 in words is "forty million, nine hundred ninety thousand, two hundred forty-nine".