3953985 has 16 divisors (see below), whose sum is σ = 7230336. Its totient is φ = 1807488.

The previous prime is 3953927. The next prime is 3953993. The reversal of 3953985 is 5893593.

It is not a de Polignac number, because 3953985 - 2⁶ = 3953921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18724 + ... + 18933.

It is an arithmetic number, because the mean of its divisors is an integer number (451896).

Almost surely, 2^3953985 is an apocalyptic number.

3953985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3953985 is a deficient number, since it is larger than the sum of its proper divisors (3276351).

3953985 is a wasteful number, since it uses less digits than its factorization.

3953985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37672.

The product of its digits is 145800, while the sum is 42.

The square root of 3953985 is about 1988.4629742593. The cubic root of 3953985 is about 158.1290538833.

The spelling of 3953985 in words is "three million, nine hundred fifty-three thousand, nine hundred eighty-five".