40019841 has 12 divisors (see below), whose sum is σ = 58599268. Its totient is φ = 26313984.

The previous prime is 40019831. The next prime is 40019849. The reversal of 40019841 is 14891004.

It can be written as a sum of positive squares in 2 ways, for example, as 7290000 + 32729841 = 2700^2 + 5721^2 .

It is not a de Polignac number, because 40019841 - 2⁵ = 40019809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40019849) 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 in 11 ways as a sum of consecutive naturals, for example, 29800 + ... + 31113.

Almost surely, 2^40019841 is an apocalyptic number.

It is an amenable number.

40019841 is a deficient number, since it is larger than the sum of its proper divisors (18579427).

40019841 is a wasteful number, since it uses less digits than its factorization.

40019841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60992 (or 60989 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 40019841 is about 6326.1236946490. The cubic root of 40019841 is about 342.0517260431.

The spelling of 40019841 in words is "forty million, nineteen thousand, eight hundred forty-one".