3993538 has 16 divisors (see below), whose sum is σ = 6433560. Its totient is φ = 1852416.

The previous prime is 3993527. The next prime is 3993547. The reversal of 3993538 is 8353993.

It can be written as a sum of positive squares in 4 ways, for example, as 3948169 + 45369 = 1987^2 + 213^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3993538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678 + ... + 3286.

Almost surely, 2^3993538 is an apocalyptic number.

3993538 is a deficient number, since it is larger than the sum of its proper divisors (2440022).

3993538 is a wasteful number, since it uses less digits than its factorization.

3993538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701.

The product of its digits is 87480, while the sum is 40.

The square root of 3993538 is about 1998.3838470124. The cubic root of 3993538 is about 158.6545775770.

The spelling of 3993538 in words is "three million, nine hundred ninety-three thousand, five hundred thirty-eight".