40473709 has 2 divisors, whose sum is σ = 40473710. Its totient is φ = 40473708.

The previous prime is 40473703. The next prime is 40473739. The reversal of 40473709 is 90737404.

40473709 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., 30008484 + 10465225 = 5478^2 + 3235^2 .

It is a cyclic number.

It is not a de Polignac number, because 40473709 - 2⁷ = 40473581 is a prime.

It is a super-2 number, since 2×40473709² = 3276242240433362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40473703) 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, 20236854 + 20236855.

It is an arithmetic number, because the mean of its divisors is an integer number (20236855).

Almost surely, 2^40473709 is an apocalyptic number.

It is an amenable number.

40473709 is a deficient number, since it is larger than the sum of its proper divisors (1).

40473709 is an equidigital number, since it uses as much as digits as its factorization.

40473709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 40473709 is about 6361.8950792983. The cubic root of 40473709 is about 343.3399463541.

The spelling of 40473709 in words is "forty million, four hundred seventy-three thousand, seven hundred nine".