4220426691 has 18 divisors (see below), whose sum is σ = 6601182588. Its totient is φ = 2597184720.

The previous prime is 4220426669. The next prime is 4220426701. The reversal of 4220426691 is 1966240224.

4220426691 is a `hidden beast` number, since 4 + 220 + 426 + 6 + 9 + 1 = 666.

It is not a de Polignac number, because 4220426691 - 2⁹ = 4220426179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4220426621) 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 in 17 ways as a sum of consecutive naturals, for example, 1385865 + ... + 1388906.

It is an arithmetic number, because the mean of its divisors is an integer number (366732366).

Almost surely, 2^4220426691 is an apocalyptic number.

4220426691 is a deficient number, since it is larger than the sum of its proper divisors (2380755897).

4220426691 is a wasteful number, since it uses less digits than its factorization.

4220426691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774803 (or 2774787 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 4220426691 is about 64964.8111749738. The cubic root of 4220426691 is about 1616.0400526530.

The spelling of 4220426691 in words is "four billion, two hundred twenty million, four hundred twenty-six thousand, six hundred ninety-one".