4470421 has 2 divisors, whose sum is σ = 4470422. Its totient is φ = 4470420.

The previous prime is 4470419. The next prime is 4470443. The reversal of 4470421 is 1240744.

It is an a-pointer prime, because the next prime (4470443) can be obtained adding 4470421 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 119025 = 2086^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 4470421 - 2¹ = 4470419 is a prime.

Together with 4470419, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4470392 and 4470401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4470461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2235210 + 2235211.

It is an arithmetic number, because the mean of its divisors is an integer number (2235211).

Almost surely, 2^4470421 is an apocalyptic number.

It is an amenable number.

4470421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4470421 is an equidigital number, since it uses as much as digits as its factorization.

4470421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 4470421 is about 2114.3370119260. The cubic root of 4470421 is about 164.7338347242.

The spelling of 4470421 in words is "four million, four hundred seventy thousand, four hundred twenty-one".