40494737 has 2 divisors, whose sum is σ = 40494738. Its totient is φ = 40494736.

The previous prime is 40494721. The next prime is 40494763. The reversal of 40494737 is 73749404.

It is a happy number.

40494737 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., 24245776 + 16248961 = 4924^2 + 4031^2 .

It is a cyclic number.

It is not a de Polignac number, because 40494737 - 2⁴ = 40494721 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40494737.

It is not a weakly prime, because it can be changed into another prime (40494767) 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, 20247368 + 20247369.

It is an arithmetic number, because the mean of its divisors is an integer number (20247369).

Almost surely, 2^40494737 is an apocalyptic number.

It is an amenable number.

40494737 is a deficient number, since it is larger than the sum of its proper divisors (1).

40494737 is an equidigital number, since it uses as much as digits as its factorization.

40494737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 40494737 is about 6363.5475169122. The cubic root of 40494737 is about 343.3993964893.

The spelling of 40494737 in words is "forty million, four hundred ninety-four thousand, seven hundred thirty-seven".