4099541 has 2 divisors, whose sum is σ = 4099542. Its totient is φ = 4099540.

The previous prime is 4099531. The next prime is 4099561. The reversal of 4099541 is 1459904.

Added to its reverse (1459904) it gives a triangular number (5559445 = T₃₃₃₄).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3900625 + 198916 = 1975^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 4099541 - 2⁶ = 4099477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4099498 and 4099507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4099531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049770 + 2049771.

It is an arithmetic number, because the mean of its divisors is an integer number (2049771).

Almost surely, 2^4099541 is an apocalyptic number.

It is an amenable number.

4099541 is a deficient number, since it is larger than the sum of its proper divisors (1).

4099541 is an equidigital number, since it uses as much as digits as its factorization.

4099541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 4099541 is about 2024.7323279881. The cubic root of 4099541 is about 160.0460934907.

Adding to 4099541 its reverse (1459904), we get a triangular number (5559445 = T₃₃₃₄).

The spelling of 4099541 in words is "four million, ninety-nine thousand, five hundred forty-one".