40494133 has 2 divisors, whose sum is σ = 40494134. Its totient is φ = 40494132.

The previous prime is 40494131. The next prime is 40494137. The reversal of 40494133 is 33149404.

40494133 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., 38663524 + 1830609 = 6218^2 + 1353^2 .

It is a cyclic number.

It is not a de Polignac number, because 40494133 - 2¹ = 40494131 is a prime.

Together with 40494131, it forms a pair of twin primes.

It is the 6364-th Hogben number.

It is equal to p_2461915 and since 40494133 and 2461915 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40494131) by changing a digit.

It is a nontrivial repunit in base 6363.

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, 20247066 + 20247067.

It is an arithmetic number, because the mean of its divisors is an integer number (20247067).

Almost surely, 2^40494133 is an apocalyptic number.

It is an amenable number.

40494133 is a deficient number, since it is larger than the sum of its proper divisors (1).

40494133 is an equidigital number, since it uses as much as digits as its factorization.

40494133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40494133 is about 6363.5000589298. The cubic root of 40494133 is about 343.3976891542.

The spelling of 40494133 in words is "forty million, four hundred ninety-four thousand, one hundred thirty-three".