3867985 has 8 divisors (see below), whose sum is σ = 5063616. Its totient is φ = 2813040.

The previous prime is 3867961. The next prime is 3868003. The reversal of 3867985 is 5897683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3867985 is a prime.

It is a super-2 number, since 2×3867985² = 29922615920450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35109 + ... + 35218.

It is an arithmetic number, because the mean of its divisors is an integer number (632952).

Almost surely, 2^3867985 is an apocalyptic number.

It is an amenable number.

3867985 is a deficient number, since it is larger than the sum of its proper divisors (1195631).

3867985 is a wasteful number, since it uses less digits than its factorization.

3867985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70343.

The product of its digits is 362880, while the sum is 46.

The square root of 3867985 is about 1966.7193495769. The cubic root of 3867985 is about 156.9741934946.

The spelling of 3867985 in words is "three million, eight hundred sixty-seven thousand, nine hundred eighty-five".