40034791 has 2 divisors, whose sum is σ = 40034792. Its totient is φ = 40034790.

The previous prime is 40034783. The next prime is 40034803. The reversal of 40034791 is 19743004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40034791 - 2³ = 40034783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40031791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20017395 + 20017396.

It is an arithmetic number, because the mean of its divisors is an integer number (20017396).

Almost surely, 2^40034791 is an apocalyptic number.

40034791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40034791 is an equidigital number, since it uses as much as digits as its factorization.

40034791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 40034791 is about 6327.3051925761. The cubic root of 40034791 is about 342.0943135576.

Adding to 40034791 its reverse (19743004), we get a palindrome (59777795).

The spelling of 40034791 in words is "forty million, thirty-four thousand, seven hundred ninety-one".