4066919 has 4 divisors (see below), whose sum is σ = 4108944. Its totient is φ = 4024896.

The previous prime is 4066901. The next prime is 4066943. The reversal of 4066919 is 9196604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4066919 - 2¹² = 4062823 is a prime.

It is a super-2 number, since 2×4066919² = 33079660305122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066949) 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 3 ways as a sum of consecutive naturals, for example, 20867 + ... + 21060.

It is an arithmetic number, because the mean of its divisors is an integer number (1027236).

Almost surely, 2^4066919 is an apocalyptic number.

4066919 is a deficient number, since it is larger than the sum of its proper divisors (42025).

4066919 is an equidigital number, since it uses as much as digits as its factorization.

4066919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42024.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 4066919 is about 2016.6603581169. The cubic root of 4066919 is about 159.6204414535.

The spelling of 4066919 in words is "four million, sixty-six thousand, nine hundred nineteen".