3813985 has 8 divisors (see below), whose sum is σ = 5230656. Its totient is φ = 2615280.

The previous prime is 3813983. The next prime is 3814009. The reversal of 3813985 is 5893183.

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

It is not a de Polignac number, because 3813985 - 2¹ = 3813983 is a prime.

It is a super-3 number, since 3×3813985³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3813983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54451 + ... + 54520.

It is an arithmetic number, because the mean of its divisors is an integer number (653832).

Almost surely, 2^3813985 is an apocalyptic number.

3813985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3813985 is a deficient number, since it is larger than the sum of its proper divisors (1416671).

3813985 is a wasteful number, since it uses less digits than its factorization.

3813985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108983.

The product of its digits is 25920, while the sum is 37.

The square root of 3813985 is about 1952.9426514877. The cubic root of 3813985 is about 156.2402745947.

The spelling of 3813985 in words is "three million, eight hundred thirteen thousand, nine hundred eighty-five".