3874985 has 4 divisors (see below), whose sum is σ = 4649988. Its totient is φ = 3099984.

The previous prime is 3874979. The next prime is 3874987. The reversal of 3874985 is 5894783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1149184 + 2725801 = 1072^2 + 1651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3874985 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3874987) 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, 387494 + ... + 387503.

It is an arithmetic number, because the mean of its divisors is an integer number (1162497).

Almost surely, 2^3874985 is an apocalyptic number.

It is an amenable number.

3874985 is a deficient number, since it is larger than the sum of its proper divisors (775003).

3874985 is an equidigital number, since it uses as much as digits as its factorization.

3874985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775002.

The product of its digits is 241920, while the sum is 44.

The square root of 3874985 is about 1968.4981584955. The cubic root of 3874985 is about 157.0688299496.

The spelling of 3874985 in words is "three million, eight hundred seventy-four thousand, nine hundred eighty-five".