4292385821 has 4 divisors (see below), whose sum is σ = 4293260892. Its totient is φ = 4291510752.

The previous prime is 4292385793. The next prime is 4292385827. The reversal of 4292385821 is 1285832924.

4292385821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 789048100 + 3503337721 = 28090^2 + 59189^2 .

It is a cyclic number.

It is not a de Polignac number, because 4292385821 - 2¹⁰ = 4292384797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4292385827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430136 + ... + 440001.

It is an arithmetic number, because the mean of its divisors is an integer number (1073315223).

Almost surely, 2^4292385821 is an apocalyptic number.

It is an amenable number.

4292385821 is a deficient number, since it is larger than the sum of its proper divisors (875071).

4292385821 is an equidigital number, since it uses as much as digits as its factorization.

4292385821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875070.

The product of its digits is 276480, while the sum is 44.

The square root of 4292385821 is about 65516.3019484464. The cubic root of 4292385821 is about 1625.1729451908.

The spelling of 4292385821 in words is "four billion, two hundred ninety-two million, three hundred eighty-five thousand, eight hundred twenty-one".