3823641 has 6 divisors (see below), whose sum is σ = 5523050. Its totient is φ = 2549088.

The previous prime is 3823627. The next prime is 3823649. The reversal of 3823641 is 1463283.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 1390041 = 1560^2 + 1179^2 .

It is not a de Polignac number, because 3823641 - 2⁵ = 3823609 is a prime.

It is a Duffinian number.

3823641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3823649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212416 + ... + 212433.

Almost surely, 2^3823641 is an apocalyptic number.

It is an amenable number.

3823641 is a deficient number, since it is larger than the sum of its proper divisors (1699409).

3823641 is a wasteful number, since it uses less digits than its factorization.

3823641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424855 (or 424852 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 3823641 is about 1955.4132555549. The cubic root of 3823641 is about 156.3720164785.

The spelling of 3823641 in words is "three million, eight hundred twenty-three thousand, six hundred forty-one".