40447261 has 2 divisors, whose sum is σ = 40447262. Its totient is φ = 40447260.

The previous prime is 40447249. The next prime is 40447283. The reversal of 40447261 is 16274404.

40447261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28955161 + 11492100 = 5381^2 + 3390^2 .

It is a cyclic number.

It is not a de Polignac number, because 40447261 - 2¹⁷ = 40316189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40447201) 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, 20223630 + 20223631.

It is an arithmetic number, because the mean of its divisors is an integer number (20223631).

Almost surely, 2^40447261 is an apocalyptic number.

It is an amenable number.

40447261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40447261 is an equidigital number, since it uses as much as digits as its factorization.

40447261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40447261 is about 6359.8161136939. The cubic root of 40447261 is about 343.2651436094.

The spelling of 40447261 in words is "forty million, four hundred forty-seven thousand, two hundred sixty-one".