40354091 has 2 divisors, whose sum is σ = 40354092. Its totient is φ = 40354090.

The previous prime is 40354021. The next prime is 40354103. The reversal of 40354091 is 19045304.

40354091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40354091 is a prime.

It is a super-4 number, since 4×40354091⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40354091.

It is not a weakly prime, because it can be changed into another prime (40354021) 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, 20177045 + 20177046.

It is an arithmetic number, because the mean of its divisors is an integer number (20177046).

Almost surely, 2^40354091 is an apocalyptic number.

40354091 is a deficient number, since it is larger than the sum of its proper divisors (1).

40354091 is an equidigital number, since it uses as much as digits as its factorization.

40354091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40354091 is about 6352.4869932964. The cubic root of 40354091 is about 343.0013713052.

Adding to 40354091 its reverse (19045304), we get a palindrome (59399395).

The spelling of 40354091 in words is "forty million, three hundred fifty-four thousand, ninety-one".