3849813 has 24 divisors (see below), whose sum is σ = 6236256. Its totient is φ = 2268000.

The previous prime is 3849793. The next prime is 3849821. The reversal of 3849813 is 3189483.

It is not a de Polignac number, because 3849813 - 2¹² = 3845717 is a prime.

3849813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3849823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3138 + ... + 4188.

It is an arithmetic number, because the mean of its divisors is an integer number (259844).

Almost surely, 2^3849813 is an apocalyptic number.

3849813 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3849813 is a deficient number, since it is larger than the sum of its proper divisors (2386443).

3849813 is a wasteful number, since it uses less digits than its factorization.

3849813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105 (or 1102 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 3849813 is about 1962.0940344438. The cubic root of 3849813 is about 156.7279831412.

The spelling of 3849813 in words is "three million, eight hundred forty-nine thousand, eight hundred thirteen".