3787649 has 2 divisors, whose sum is σ = 3787650. Its totient is φ = 3787648.

The previous prime is 3787643. The next prime is 3787657. The reversal of 3787649 is 9467873.

3787649 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., 3783025 + 4624 = 1945^2 + 68^2 .

It is an emirp because it is prime and its reverse (9467873) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3787649 is a prime.

It is not a weakly prime, because it can be changed into another prime (3787643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1893824 + 1893825.

It is an arithmetic number, because the mean of its divisors is an integer number (1893825).

Almost surely, 2^3787649 is an apocalyptic number.

It is an amenable number.

3787649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3787649 is an equidigital number, since it uses as much as digits as its factorization.

3787649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 3787649 is about 1946.1883259335. The cubic root of 3787649 is about 155.8798247156.

The spelling of 3787649 in words is "three million, seven hundred eighty-seven thousand, six hundred forty-nine".