40670009 has 2 divisors, whose sum is σ = 40670010. Its totient is φ = 40670008.

The previous prime is 40669999. The next prime is 40670023. The reversal of 40670009 is 90007604.

40670009 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., 39942400 + 727609 = 6320^2 + 853^2 .

It is a cyclic number.

It is not a de Polignac number, because 40670009 - 2¹² = 40665913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40670009.

It is not a weakly prime, because it can be changed into another prime (40670309) 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, 20335004 + 20335005.

It is an arithmetic number, because the mean of its divisors is an integer number (20335005).

Almost surely, 2^40670009 is an apocalyptic number.

It is an amenable number.

40670009 is a deficient number, since it is larger than the sum of its proper divisors (1).

40670009 is an equidigital number, since it uses as much as digits as its factorization.

40670009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40670009 is about 6377.3042110284. The cubic root of 40670009 is about 343.8941247321.

The spelling of 40670009 in words is "forty million, six hundred seventy thousand, nine".