3938530 has 8 divisors (see below), whose sum is σ = 7089372. Its totient is φ = 1575408.

The previous prime is 3938527. The next prime is 3938531. The reversal of 3938530 is 358393.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 6241 = 1983^2 + 79^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3938492 and 3938501.

It is not an unprimeable number, because it can be changed into a prime (3938531) 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, 196917 + ... + 196936.

Almost surely, 2^3938530 is an apocalyptic number.

3938530 is a deficient number, since it is larger than the sum of its proper divisors (3150842).

3938530 is a wasteful number, since it uses less digits than its factorization.

3938530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393860.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 3938530 is about 1984.5730019327. The cubic root of 3938530 is about 157.9227577365.

The spelling of 3938530 in words is "three million, nine hundred thirty-eight thousand, five hundred thirty".