4721879 has 2 divisors, whose sum is σ = 4721880. Its totient is φ = 4721878.

The previous prime is 4721839. The next prime is 4721887. The reversal of 4721879 is 9781274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4721879 - 2¹⁶ = 4656343 is a prime.

It is a super-2 number, since 2×4721879² = 44592282581282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4721819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2360939 + 2360940.

It is an arithmetic number, because the mean of its divisors is an integer number (2360940).

Almost surely, 2^4721879 is an apocalyptic number.

4721879 is a deficient number, since it is larger than the sum of its proper divisors (1).

4721879 is an equidigital number, since it uses as much as digits as its factorization.

4721879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 4721879 is about 2172.9884951375. The cubic root of 4721879 is about 167.7663868445.

The spelling of 4721879 in words is "four million, seven hundred twenty-one thousand, eight hundred seventy-nine".