40349849 has 2 divisors, whose sum is σ = 40349850. Its totient is φ = 40349848.

The previous prime is 40349839. The next prime is 40349861. The reversal of 40349849 is 94894304.

40349849 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 can be written as a sum of positive squares in only one way, i.e., 31753225 + 8596624 = 5635^2 + 2932^2 .

It is a cyclic number.

It is not a de Polignac number, because 40349849 - 2⁴ = 40349833 is a prime.

It is a super-2 number, since 2×40349849² = 3256220628645602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40349809) 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, 20174924 + 20174925.

It is an arithmetic number, because the mean of its divisors is an integer number (20174925).

Almost surely, 2^40349849 is an apocalyptic number.

It is an amenable number.

40349849 is a deficient number, since it is larger than the sum of its proper divisors (1).

40349849 is an equidigital number, since it uses as much as digits as its factorization.

40349849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 40349849 is about 6352.1530995403. The cubic root of 40349849 is about 342.9893521785.

The spelling of 40349849 in words is "forty million, three hundred forty-nine thousand, eight hundred forty-nine".