3946388 has 6 divisors (see below), whose sum is σ = 6906186. Its totient is φ = 1973192.

The previous prime is 3946387. The next prime is 3946391. The reversal of 3946388 is 8836493.

It can be written as a sum of positive squares in only one way, i.e., 3139984 + 806404 = 1772^2 + 898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493295 + ... + 493302.

It is an arithmetic number, because the mean of its divisors is an integer number (1151031).

Almost surely, 2^3946388 is an apocalyptic number.

It is an amenable number.

3946388 is a deficient number, since it is larger than the sum of its proper divisors (2959798).

3946388 is a wasteful number, since it uses less digits than its factorization.

3946388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986601 (or 986599 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 3946388 is about 1986.5517863877. The cubic root of 3946388 is about 158.0277150548.

It can be divided in two parts, 3946 and 388, that added together give a palindrome (4334).

The spelling of 3946388 in words is "three million, nine hundred forty-six thousand, three hundred eighty-eight".