3842813 has 4 divisors (see below), whose sum is σ = 4138428. Its totient is φ = 3547200.

The previous prime is 3842809. The next prime is 3842831. The reversal of 3842813 is 3182483.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1643524 + 2199289 = 1282^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 3842813 - 2² = 3842809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3842803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147788 + ... + 147813.

It is an arithmetic number, because the mean of its divisors is an integer number (1034607).

Almost surely, 2^3842813 is an apocalyptic number.

It is an amenable number.

3842813 is a deficient number, since it is larger than the sum of its proper divisors (295615).

3842813 is a wasteful number, since it uses less digits than its factorization.

3842813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295614.

The product of its digits is 4608, while the sum is 29.

The square root of 3842813 is about 1960.3094143527. The cubic root of 3842813 is about 156.6329342394.

The spelling of 3842813 in words is "three million, eight hundred forty-two thousand, eight hundred thirteen".