40899653 has 2 divisors, whose sum is σ = 40899654. Its totient is φ = 40899652.

The previous prime is 40899631. The next prime is 40899679. The reversal of 40899653 is 35699804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33154564 + 7745089 = 5758^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 40899653 - 2¹⁰ = 40898629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40899613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20449826 + 20449827.

It is an arithmetic number, because the mean of its divisors is an integer number (20449827).

Almost surely, 2^40899653 is an apocalyptic number.

It is an amenable number.

40899653 is a deficient number, since it is larger than the sum of its proper divisors (1).

40899653 is an equidigital number, since it uses as much as digits as its factorization.

40899653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 40899653 is about 6395.2836528179. The cubic root of 40899653 is about 344.5401785653.

The spelling of 40899653 in words is "forty million, eight hundred ninety-nine thousand, six hundred fifty-three".