40350491 has 2 divisors, whose sum is σ = 40350492. Its totient is φ = 40350490.

The previous prime is 40350403. The next prime is 40350521. The reversal of 40350491 is 19405304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40350491 - 2²² = 36156187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40350491.

It is not a weakly prime, because it can be changed into another prime (40350691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20175245 + 20175246.

It is an arithmetic number, because the mean of its divisors is an integer number (20175246).

Almost surely, 2^40350491 is an apocalyptic number.

40350491 is a deficient number, since it is larger than the sum of its proper divisors (1).

40350491 is an equidigital number, since it uses as much as digits as its factorization.

40350491 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 40350491 is about 6352.2036333858. The cubic root of 40350491 is about 342.9911712518.

Adding to 40350491 its reverse (19405304), we get a palindrome (59755795).

The spelling of 40350491 in words is "forty million, three hundred fifty thousand, four hundred ninety-one".