4679921 has 2 divisors, whose sum is σ = 4679922. Its totient is φ = 4679920.

The previous prime is 4679911. The next prime is 4679923. The reversal of 4679921 is 1299764.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4669921 + 10000 = 2161^2 + 100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4679921 is a prime.

Together with 4679923, 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 (4679923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2339960 + 2339961.

It is an arithmetic number, because the mean of its divisors is an integer number (2339961).

Almost surely, 2^4679921 is an apocalyptic number.

It is an amenable number.

4679921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4679921 is an equidigital number, since it uses as much as digits as its factorization.

4679921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 4679921 is about 2163.3125063199. The cubic root of 4679921 is about 167.2679909565.

The spelling of 4679921 in words is "four million, six hundred seventy-nine thousand, nine hundred twenty-one".