4040621 has 6 divisors (see below), whose sum is σ = 4375530. Its totient is φ = 3729648.

The previous prime is 4040593. The next prime is 4040627. The reversal of 4040621 is 1260404.

It can be written as a sum of positive squares in 3 ways, for example, as 280900 + 3759721 = 530^2 + 1939^2 .

It is not a de Polignac number, because 4040621 - 2¹⁰ = 4039597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4040621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040627) 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, 11786 + ... + 12123.

It is an arithmetic number, because the mean of its divisors is an integer number (729255).

Almost surely, 2^4040621 is an apocalyptic number.

It is an amenable number.

4040621 is a deficient number, since it is larger than the sum of its proper divisors (334909).

4040621 is a wasteful number, since it uses less digits than its factorization.

4040621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23935 (or 23922 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4040621 is about 2010.1295978120. The cubic root of 4040621 is about 159.2756449052.

The spelling of 4040621 in words is "four million, forty thousand, six hundred twenty-one".