4739809 has 4 divisors (see below), whose sum is σ = 4840704. Its totient is φ = 4638916.

The previous prime is 4739803. The next prime is 4739831. The reversal of 4739809 is 9089374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4739809 - 2⁹ = 4739297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4739803) 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, 50377 + ... + 50470.

It is an arithmetic number, because the mean of its divisors is an integer number (1210176).

Almost surely, 2^4739809 is an apocalyptic number.

It is an amenable number.

4739809 is a deficient number, since it is larger than the sum of its proper divisors (100895).

4739809 is a wasteful number, since it uses less digits than its factorization.

4739809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100894.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 4739809 is about 2177.1102406631. The cubic root of 4739809 is about 167.9784671004.

The spelling of 4739809 in words is "four million, seven hundred thirty-nine thousand, eight hundred nine".