4291221429 has 32 divisors (see below), whose sum is σ = 7018905600. Its totient is φ = 2569391280.

The previous prime is 4291221391. The next prime is 4291221433. The reversal of 4291221429 is 9241221924.

4291221429 is a `hidden beast` number, since 4 + 2 + 9 + 1 + 221 + 429 = 666.

It is not a de Polignac number, because 4291221429 - 2⁸ = 4291221173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4291221393 and 4291221402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4291221449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62389 + ... + 111690.

It is an arithmetic number, because the mean of its divisors is an integer number (219340800).

Almost surely, 2^4291221429 is an apocalyptic number.

It is an amenable number.

4291221429 is a deficient number, since it is larger than the sum of its proper divisors (2727684171).

4291221429 is a wasteful number, since it uses less digits than its factorization.

4291221429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174182 (or 174176 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 4291221429 is about 65507.4150688302. The cubic root of 4291221429 is about 1625.0259787878.

The spelling of 4291221429 in words is "four billion, two hundred ninety-one million, two hundred twenty-one thousand, four hundred twenty-nine".