4085307938 has 4 divisors (see below), whose sum is σ = 6127961910. Its totient is φ = 2042653968.

The previous prime is 4085307917. The next prime is 4085307943. The reversal of 4085307938 is 8397035804.

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

It can be written as a sum of positive squares in only one way, i.e., 3260067409 + 825240529 = 57097^2 + 28727^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4085307892 and 4085307901.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021326983 + ... + 1021326986.

Almost surely, 2^4085307938 is an apocalyptic number.

4085307938 is a deficient number, since it is larger than the sum of its proper divisors (2042653972).

4085307938 is a wasteful number, since it uses less digits than its factorization.

4085307938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042653971.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 4085307938 is about 63916.4136822460. The cubic root of 4085307938 is about 1598.6065912870.

The spelling of 4085307938 in words is "four billion, eighty-five million, three hundred seven thousand, nine hundred thirty-eight".