40734809 has 2 divisors, whose sum is σ = 40734810. Its totient is φ = 40734808.

The previous prime is 40734791. The next prime is 40734829. The reversal of 40734809 is 90843704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37393225 + 3341584 = 6115^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 40734809 - 2⁸ = 40734553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40734829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20367404 + 20367405.

It is an arithmetic number, because the mean of its divisors is an integer number (20367405).

Almost surely, 2^40734809 is an apocalyptic number.

It is an amenable number.

40734809 is a deficient number, since it is larger than the sum of its proper divisors (1).

40734809 is an equidigital number, since it uses as much as digits as its factorization.

40734809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40734809 is about 6382.3827055419. The cubic root of 40734809 is about 344.0766713227.

The spelling of 40734809 in words is "forty million, seven hundred thirty-four thousand, eight hundred nine".