40999993 has 2 divisors, whose sum is σ = 40999994. Its totient is φ = 40999992.

The previous prime is 40999969. The next prime is 40999999. The reversal of 40999993 is 39999904.

40999993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 4963984 = 6003^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 40999993 - 2¹³ = 40991801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40999993.

It is not a weakly prime, because it can be changed into another prime (40999999) 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, 20499996 + 20499997.

It is an arithmetic number, because the mean of its divisors is an integer number (20499997).

Almost surely, 2^40999993 is an apocalyptic number.

It is an amenable number.

40999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

40999993 is an equidigital number, since it uses as much as digits as its factorization.

40999993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 708588, while the sum is 52.

The square root of 40999993 is about 6403.1236908247. The cubic root of 40999993 is about 344.8217044143.

The spelling of 40999993 in words is "forty million, nine hundred ninety-nine thousand, nine hundred ninety-three".