4113621 has 12 divisors (see below), whose sum is σ = 6147180. Its totient is φ = 2647680.

The previous prime is 4113611. The next prime is 4113647. The reversal of 4113621 is 1263114.

It is a happy number.

4113621 is a `hidden beast` number, since 41 + 1 + 3 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2387025 + 1726596 = 1545^2 + 1314^2 .

It is not a de Polignac number, because 4113621 - 2⁵ = 4113589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4113594 and 4113603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4113601) 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 11 ways as a sum of consecutive naturals, for example, 7620 + ... + 8141.

It is an arithmetic number, because the mean of its divisors is an integer number (512265).

Almost surely, 2^4113621 is an apocalyptic number.

It is an amenable number.

4113621 is a deficient number, since it is larger than the sum of its proper divisors (2033559).

4113621 is a wasteful number, since it uses less digits than its factorization.

4113621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15796 (or 15793 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 4113621 is about 2028.2063504486. The cubic root of 4113621 is about 160.2291118710.

Adding to 4113621 its reverse (1263114), we get a palindrome (5376735).

The spelling of 4113621 in words is "four million, one hundred thirteen thousand, six hundred twenty-one".