4809919 has 4 divisors (see below), whose sum is σ = 4837896. Its totient is φ = 4781944.

The previous prime is 4809901. The next prime is 4809941. The reversal of 4809919 is 9199084.

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 4809919 - 2²¹ = 2712767 is a prime.

It is a super-3 number, since 3×4809919³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4809949) 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, 13729 + ... + 14074.

It is an arithmetic number, because the mean of its divisors is an integer number (1209474).

Almost surely, 2^4809919 is an apocalyptic number.

4809919 is a deficient number, since it is larger than the sum of its proper divisors (27977).

4809919 is a wasteful number, since it uses less digits than its factorization.

4809919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27976.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 4809919 is about 2193.1527534579. The cubic root of 4809919 is about 168.8026476790.

The spelling of 4809919 in words is "four million, eight hundred nine thousand, nine hundred nineteen".