3964736 has 14 divisors (see below), whose sum is σ = 7867650. Its totient is φ = 1982336.

The previous prime is 3964733. The next prime is 3964759. The reversal of 3964736 is 6374693.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3534400 + 430336 = 1880^2 + 656^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3964736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30911 + ... + 31038.

It is an arithmetic number, because the mean of its divisors is an integer number (561975).

Almost surely, 2^3964736 is an apocalyptic number.

It is an amenable number.

3964736 is a deficient number, since it is larger than the sum of its proper divisors (3902914).

3964736 is an equidigital number, since it uses as much as digits as its factorization.

3964736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61961 (or 61951 counting only the distinct ones).

The product of its digits is 81648, while the sum is 38.

The square root of 3964736 is about 1991.1644834117. The cubic root of 3964736 is about 158.2722433455.

The spelling of 3964736 in words is "three million, nine hundred sixty-four thousand, seven hundred thirty-six".