3924621 has 24 divisors (see below), whose sum is σ = 6084000. Its totient is φ = 2430432.

The previous prime is 3924617. The next prime is 3924649. The reversal of 3924621 is 1264293.

3924621 is a `hidden beast` number, since 39 + 2 + 4 + 621 = 666.

It is not a de Polignac number, because 3924621 - 2² = 3924617 is a prime.

It is a Curzon number.

3924621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3924611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9895 + ... + 10283.

It is an arithmetic number, because the mean of its divisors is an integer number (253500).

Almost surely, 2^3924621 is an apocalyptic number.

It is an amenable number.

3924621 is a deficient number, since it is larger than the sum of its proper divisors (2159379).

3924621 is a wasteful number, since it uses less digits than its factorization.

3924621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 470 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 3924621 is about 1981.0656223356. The cubic root of 3924621 is about 157.7366359736.

The spelling of 3924621 in words is "three million, nine hundred twenty-four thousand, six hundred twenty-one".