3891485 has 32 divisors (see below), whose sum is σ = 5564160. Its totient is φ = 2585088.

The previous prime is 3891469. The next prime is 3891493. The reversal of 3891485 is 5841983.

It is a cyclic number.

It is not a de Polignac number, because 3891485 - 2⁴ = 3891469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28337 + ... + 28473.

It is an arithmetic number, because the mean of its divisors is an integer number (173880).

Almost surely, 2^3891485 is an apocalyptic number.

It is an amenable number.

3891485 is a deficient number, since it is larger than the sum of its proper divisors (1672675).

3891485 is a wasteful number, since it uses less digits than its factorization.

3891485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197.

The product of its digits is 34560, while the sum is 38.

The square root of 3891485 is about 1972.6847188540. The cubic root of 3891485 is about 157.2914515345.

The spelling of 3891485 in words is "three million, eight hundred ninety-one thousand, four hundred eighty-five".