40653091 has 2 divisors, whose sum is σ = 40653092. Its totient is φ = 40653090.

The previous prime is 40653083. The next prime is 40653101. The reversal of 40653091 is 19035604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40653091 - 2³ = 40653083 is a prime.

It is equal to p_2470924 and since 40653091 and 2470924 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40653061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20326545 + 20326546.

It is an arithmetic number, because the mean of its divisors is an integer number (20326546).

Almost surely, 2^40653091 is an apocalyptic number.

40653091 is a deficient number, since it is larger than the sum of its proper divisors (1).

40653091 is an equidigital number, since it uses as much as digits as its factorization.

40653091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 40653091 is about 6375.9776505254. The cubic root of 40653091 is about 343.8464335066.

Adding to 40653091 its reverse (19035604), we get a palindrome (59688695).

The spelling of 40653091 in words is "forty million, six hundred fifty-three thousand, ninety-one".