3942664 has 24 divisors (see below), whose sum is σ = 8127630. Its totient is φ = 1791680.

The previous prime is 3942661. The next prime is 3942677. The reversal of 3942664 is 4662493.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 108900 = 1958^2 + 330^2 .

It is a d-powerful number, because it can be written as 3³ + 9⁵ + 4 + 2¹⁹ + 6⁸ + 6⁸ + 4³ .

It is not an unprimeable number, because it can be changed into a prime (3942661) 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, 1069 + ... + 3004.

Almost surely, 2^3942664 is an apocalyptic number.

It is an amenable number.

3942664 is an abundant number, since it is smaller than the sum of its proper divisors (4184966).

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

3942664 is a wasteful number, since it uses less digits than its factorization.

3942664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101 (or 4086 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 3942664 is about 1985.6142626402. The cubic root of 3942664 is about 157.9779919140.

The spelling of 3942664 in words is "three million, nine hundred forty-two thousand, six hundred sixty-four".