4221258949 has 2 divisors, whose sum is σ = 4221258950. Its totient is φ = 4221258948.

The previous prime is 4221258889. The next prime is 4221258973. The reversal of 4221258949 is 9498521224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2405902500 + 1815356449 = 49050^2 + 42607^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221258949 - 2²⁵ = 4187704517 is a prime.

It is a super-2 number, since 2×4221258949² = 35638054229025169202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4221258899 and 4221258908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221258449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110629474 + 2110629475.

It is an arithmetic number, because the mean of its divisors is an integer number (2110629475).

Almost surely, 2^4221258949 is an apocalyptic number.

It is an amenable number.

4221258949 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221258949 is an equidigital number, since it uses as much as digits as its factorization.

4221258949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 46.

The square root of 4221258949 is about 64971.2163115329. The cubic root of 4221258949 is about 1616.1462720760.

The spelling of 4221258949 in words is "four billion, two hundred twenty-one million, two hundred fifty-eight thousand, nine hundred forty-nine".