3940436 has 6 divisors (see below), whose sum is σ = 6895770. Its totient is φ = 1970216.

The previous prime is 3940427. The next prime is 3940439. The reversal of 3940436 is 6340493.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 59536 = 1970^2 + 244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3940399 and 3940408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492551 + ... + 492558.

It is an arithmetic number, because the mean of its divisors is an integer number (1149295).

Almost surely, 2^3940436 is an apocalyptic number.

It is an amenable number.

3940436 is a deficient number, since it is larger than the sum of its proper divisors (2955334).

3940436 is a wasteful number, since it uses less digits than its factorization.

3940436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985113 (or 985111 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 3940436 is about 1985.0531479031. The cubic root of 3940436 is about 157.9482285115.

The spelling of 3940436 in words is "three million, nine hundred forty thousand, four hundred thirty-six".