4238085857 has 16 divisors (see below), whose sum is σ = 4497984000. Its totient is φ = 3989046960.

The previous prime is 4238085847. The next prime is 4238085881. The reversal of 4238085857 is 7585808324.

It is a happy number.

It is not a de Polignac number, because 4238085857 - 2¹² = 4238081761 is a prime.

It is a super-2 number, since 2×4238085857² = 35922743462606848898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4238085847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568894 + ... + 1571592.

It is an arithmetic number, because the mean of its divisors is an integer number (281124000).

Almost surely, 2^4238085857 is an apocalyptic number.

It is an amenable number.

4238085857 is a deficient number, since it is larger than the sum of its proper divisors (259898143).

4238085857 is an frugal number, since it uses more digits than its factorization.

4238085857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841 (or 2767 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The square root of 4238085857 is about 65100.5826164405. The cubic root of 4238085857 is about 1618.2908684267.

The spelling of 4238085857 in words is "four billion, two hundred thirty-eight million, eighty-five thousand, eight hundred fifty-seven".