40244249 has 2 divisors, whose sum is σ = 40244250. Its totient is φ = 40244248.

The previous prime is 40244209. The next prime is 40244251. The reversal of 40244249 is 94244204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39375625 + 868624 = 6275^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244249 - 2¹⁶ = 40178713 is a prime.

Together with 40244251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40244209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122124 + 20122125.

It is an arithmetic number, because the mean of its divisors is an integer number (20122125).

Almost surely, 2^40244249 is an apocalyptic number.

It is an amenable number.

40244249 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244249 is an equidigital number, since it uses as much as digits as its factorization.

40244249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 40244249 is about 6343.8355117389. The cubic root of 40244249 is about 342.6898771332.

The spelling of 40244249 in words is "forty million, two hundred forty-four thousand, two hundred forty-nine".