3940236 has 18 divisors (see below), whose sum is σ = 9960132. Its totient is φ = 1313400.

The previous prime is 3940231. The next prime is 3940247. The reversal of 3940236 is 6320493.

It is a tau number, because it is divible by the number of its divisors (18).

It is an Ulam number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3940231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54690 + ... + 54761.

Almost surely, 2^3940236 is an apocalyptic number.

3940236 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3940236 is an abundant number, since it is smaller than the sum of its proper divisors (6019896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3940236 is a wasteful number, since it uses less digits than its factorization.

3940236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109461 (or 109456 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 3940236 is about 1985.0027707789. The cubic root of 3940236 is about 157.9455562031.

The spelling of 3940236 in words is "three million, nine hundred forty thousand, two hundred thirty-six".