3850909 has 2 divisors, whose sum is σ = 3850910. Its totient is φ = 3850908.

The previous prime is 3850883. The next prime is 3850921. The reversal of 3850909 is 9090583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3080025 + 770884 = 1755^2 + 878^2 .

It is an emirp because it is prime and its reverse (9090583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3850909 - 2¹¹ = 3848861 is a prime.

It is an alternating number because its digits alternate between odd and even.

3850909 is a modest number, since divided by 909 gives 385 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3850949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1925454 + 1925455.

It is an arithmetic number, because the mean of its divisors is an integer number (1925455).

Almost surely, 2^3850909 is an apocalyptic number.

It is an amenable number.

3850909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3850909 is an equidigital number, since it uses as much as digits as its factorization.

3850909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 3850909 is about 1962.3733080125. The cubic root of 3850909 is about 156.7428546489.

The spelling of 3850909 in words is "three million, eight hundred fifty thousand, nine hundred nine".