3944388 has 24 divisors (see below), whose sum is σ = 10518592. Its totient is φ = 1126944.

The previous prime is 3944387. The next prime is 3944389. The reversal of 3944388 is 8834493.

It is an interprime number because it is at equal distance from previous prime (3944387) and next prime (3944389).

It is not an unprimeable number, because it can be changed into a prime (3944387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23395 + ... + 23562.

Almost surely, 2^3944388 is an apocalyptic number.

It is an amenable number.

3944388 is an abundant number, since it is smaller than the sum of its proper divisors (6574204).

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

3944388 is a wasteful number, since it uses less digits than its factorization.

3944388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46971 (or 46969 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 3944388 is about 1986.0483377803. The cubic root of 3944388 is about 158.0010147881.

The spelling of 3944388 in words is "three million, nine hundred forty-four thousand, three hundred eighty-eight".