3894637 has 2 divisors, whose sum is σ = 3894638. Its totient is φ = 3894636.

The previous prime is 3894619. The next prime is 3894673. The reversal of 3894637 is 7364983.

Together with next prime (3894673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2653641 + 1240996 = 1629^2 + 1114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3894637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3894637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3894697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1947318 + 1947319.

It is an arithmetic number, because the mean of its divisors is an integer number (1947319).

Almost surely, 2^3894637 is an apocalyptic number.

It is an amenable number.

3894637 is a deficient number, since it is larger than the sum of its proper divisors (1).

3894637 is an equidigital number, since it uses as much as digits as its factorization.

3894637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 3894637 is about 1973.4834683878. The cubic root of 3894637 is about 157.3339073800. Note that the first 3 decimals are identical.

It can be divided in two parts, 38946 and 37, that added together give a palindrome (38983).

The spelling of 3894637 in words is "three million, eight hundred ninety-four thousand, six hundred thirty-seven".