3837985 has 4 divisors (see below), whose sum is σ = 4605588. Its totient is φ = 3070384.

The previous prime is 3837979. The next prime is 3837989. The reversal of 3837985 is 5897383.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5897383 = 2113 ⋅2791.

It can be written as a sum of positive squares in 2 ways, for example, as 2845969 + 992016 = 1687^2 + 996^2 .

It is a cyclic number.

It is not a de Polignac number, because 3837985 - 2⁷ = 3837857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3837989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383794 + ... + 383803.

It is an arithmetic number, because the mean of its divisors is an integer number (1151397).

Almost surely, 2^3837985 is an apocalyptic number.

It is an amenable number.

3837985 is a deficient number, since it is larger than the sum of its proper divisors (767603).

3837985 is an equidigital number, since it uses as much as digits as its factorization.

3837985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767602.

The product of its digits is 181440, while the sum is 43.

The square root of 3837985 is about 1959.0775890709. The cubic root of 3837985 is about 156.5673103742.

The spelling of 3837985 in words is "three million, eight hundred thirty-seven thousand, nine hundred eighty-five".