4809947 has 2 divisors, whose sum is σ = 4809948. Its totient is φ = 4809946.

The previous prime is 4809943. The next prime is 4809949. The reversal of 4809947 is 7499084.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4809947 - 2² = 4809943 is a prime.

It is a super-3 number, since 3×4809947³ (a number of 21 digits) contains 333 as substring.

Together with 4809949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4809941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2404973 + 2404974.

It is an arithmetic number, because the mean of its divisors is an integer number (2404974).

Almost surely, 2^4809947 is an apocalyptic number.

4809947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4809947 is an equidigital number, since it uses as much as digits as its factorization.

4809947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 4809947 is about 2193.1591369529. The cubic root of 4809947 is about 168.8029752289.

The spelling of 4809947 in words is "four million, eight hundred nine thousand, nine hundred forty-seven".