4664921 has 2 divisors, whose sum is σ = 4664922. Its totient is φ = 4664920.

The previous prime is 4664917. The next prime is 4664927. The reversal of 4664921 is 1294664.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3013696 + 1651225 = 1736^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664921 - 2² = 4664917 is a prime.

It is a super-2 number, since 2×4664921² = 43522975872482, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (4664927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2332460 + 2332461.

It is an arithmetic number, because the mean of its divisors is an integer number (2332461).

Almost surely, 2^4664921 is an apocalyptic number.

It is an amenable number.

4664921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4664921 is an equidigital number, since it uses as much as digits as its factorization.

4664921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 4664921 is about 2159.8428183551. The cubic root of 4664921 is about 167.0890915499.

The spelling of 4664921 in words is "four million, six hundred sixty-four thousand, nine hundred twenty-one".