4221619 has 2 divisors, whose sum is σ = 4221620. Its totient is φ = 4221618.

The previous prime is 4221583. The next prime is 4221631. The reversal of 4221619 is 9161224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221619 - 2¹¹ = 4219571 is a prime.

It is a super-2 number, since 2×4221619² = 35644133962322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4221593 and 4221602.

It is not a weakly prime, because it can be changed into another prime (4221649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110809 + 2110810.

It is an arithmetic number, because the mean of its divisors is an integer number (2110810).

Almost surely, 2^4221619 is an apocalyptic number.

4221619 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221619 is an equidigital number, since it uses as much as digits as its factorization.

4221619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 4221619 is about 2054.6578790641. The cubic root of 4221619 is about 161.6192220338.

The spelling of 4221619 in words is "four million, two hundred twenty-one thousand, six hundred nineteen".