3944397 has 8 divisors (see below), whose sum is σ = 5279040. Its totient is φ = 2619680.

The previous prime is 3944389. The next prime is 3944399. The reversal of 3944397 is 7934493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3944397 - 2³ = 3944389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944399) 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, 1497 + ... + 3182.

It is an arithmetic number, because the mean of its divisors is an integer number (659880).

Almost surely, 2^3944397 is an apocalyptic number.

It is an amenable number.

3944397 is a deficient number, since it is larger than the sum of its proper divisors (1334643).

3944397 is a wasteful number, since it uses less digits than its factorization.

3944397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963.

The product of its digits is 81648, while the sum is 39.

The square root of 3944397 is about 1986.0506035849. The cubic root of 3944397 is about 158.0011349595.

The spelling of 3944397 in words is "three million, nine hundred forty-four thousand, three hundred ninety-seven".