3821445 has 16 divisors (see below), whose sum is σ = 6793920. Its totient is φ = 2038032.

The previous prime is 3821437. The next prime is 3821483. The reversal of 3821445 is 5441283.

It is not a de Polignac number, because 3821445 - 2³ = 3821437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 14019 + ... + 14288.

It is an arithmetic number, because the mean of its divisors is an integer number (424620).

Almost surely, 2^3821445 is an apocalyptic number.

It is an amenable number.

3821445 is a deficient number, since it is larger than the sum of its proper divisors (2972475).

3821445 is a wasteful number, since it uses less digits than its factorization.

3821445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28321 (or 28315 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 3821445 is about 1954.8516567760. The cubic root of 3821445 is about 156.3420747983.

The spelling of 3821445 in words is "three million, eight hundred twenty-one thousand, four hundred forty-five".