4912109 has 4 divisors (see below), whose sum is σ = 4916604. Its totient is φ = 4907616.

The previous prime is 4912091. The next prime is 4912151. The reversal of 4912109 is 9012194.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4141225 + 770884 = 2035^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 4912109 - 2⁸ = 4911853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4912309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569 + ... + 3185.

It is an arithmetic number, because the mean of its divisors is an integer number (1229151).

Almost surely, 2^4912109 is an apocalyptic number.

It is an amenable number.

4912109 is a deficient number, since it is larger than the sum of its proper divisors (4495).

4912109 is a wasteful number, since it uses less digits than its factorization.

4912109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 4912109 is about 2216.3278187127. The cubic root of 4912109 is about 169.9897225621.

The spelling of 4912109 in words is "four million, nine hundred twelve thousand, one hundred nine".