40749637 has 2 divisors, whose sum is σ = 40749638. Its totient is φ = 40749636.

The previous prime is 40749619. The next prime is 40749641. The reversal of 40749637 is 73694704.

40749637 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., 28366276 + 12383361 = 5326^2 + 3519^2 .

It is a cyclic number.

It is not a de Polignac number, because 40749637 - 2¹⁵ = 40716869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40749637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40749607) 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, 20374818 + 20374819.

It is an arithmetic number, because the mean of its divisors is an integer number (20374819).

Almost surely, 2^40749637 is an apocalyptic number.

It is an amenable number.

40749637 is a deficient number, since it is larger than the sum of its proper divisors (1).

40749637 is an equidigital number, since it uses as much as digits as its factorization.

40749637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 40749637 is about 6383.5442349842. The cubic root of 40749637 is about 344.1184157184.

The spelling of 40749637 in words is "forty million, seven hundred forty-nine thousand, six hundred thirty-seven".