3935818 has 4 divisors (see below), whose sum is σ = 5903730. Its totient is φ = 1967908.

The previous prime is 3935809. The next prime is 3935819. The reversal of 3935818 is 8185393.

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., 2732409 + 1203409 = 1653^2 + 1097^2 .

It is not an unprimeable number, because it can be changed into a prime (3935819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983953 + ... + 983956.

Almost surely, 2^3935818 is an apocalyptic number.

3935818 is a deficient number, since it is larger than the sum of its proper divisors (1967912).

3935818 is a wasteful number, since it uses less digits than its factorization.

3935818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967911.

The product of its digits is 25920, while the sum is 37.

The square root of 3935818 is about 1983.8896138646. The cubic root of 3935818 is about 157.8865018356.

It can be divided in two parts, 3935 and 818, that added together give a triangular number (4753 = T₉₇).

The spelling of 3935818 in words is "three million, nine hundred thirty-five thousand, eight hundred eighteen".