40734791 has 2 divisors, whose sum is σ = 40734792. Its totient is φ = 40734790.

The previous prime is 40734787. The next prime is 40734809. The reversal of 40734791 is 19743704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40734791 - 2² = 40734787 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40734391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20367395 + 20367396.

It is an arithmetic number, because the mean of its divisors is an integer number (20367396).

Almost surely, 2^40734791 is an apocalyptic number.

40734791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40734791 is an equidigital number, since it uses as much as digits as its factorization.

40734791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 40734791 is about 6382.3812954100. The cubic root of 40734791 is about 344.0766206423.

The spelling of 40734791 in words is "forty million, seven hundred thirty-four thousand, seven hundred ninety-one".