40790291 has 2 divisors, whose sum is σ = 40790292. Its totient is φ = 40790290.

The previous prime is 40790287. The next prime is 40790329. The reversal of 40790291 is 19209704.

40790291 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 is a cyclic number.

It is not a de Polignac number, because 40790291 - 2² = 40790287 is a prime.

It is not a weakly prime, because it can be changed into another prime (40790221) 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, 20395145 + 20395146.

It is an arithmetic number, because the mean of its divisors is an integer number (20395146).

Almost surely, 2^40790291 is an apocalyptic number.

40790291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40790291 is an equidigital number, since it uses as much as digits as its factorization.

40790291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 40790291 is about 6386.7277223943. The cubic root of 40790291 is about 344.2328146133.

Adding to 40790291 its reverse (19209704), we get a palindrome (59999995).

The spelling of 40790291 in words is "forty million, seven hundred ninety thousand, two hundred ninety-one".