3944457 has 40 divisors (see below), whose sum is σ = 6795360. Its totient is φ = 2255040.

The previous prime is 3944449. The next prime is 3944461. The reversal of 3944457 is 7544493.

It is not a de Polignac number, because 3944457 - 2³ = 3944449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3944407) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16813 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (169884).

Almost surely, 2^3944457 is an apocalyptic number.

It is an amenable number.

3944457 is a deficient number, since it is larger than the sum of its proper divisors (2850903).

3944457 is a wasteful number, since it uses less digits than its factorization.

3944457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 266 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 3944457 is about 1986.0657088828. The cubic root of 3944457 is about 158.0019360976.

Adding to 3944457 its sum of digits (36), we get a palindrome (3944493).

It can be divided in two parts, 394 and 4457, that added together give a triangular number (4851 = T₉₈).

The spelling of 3944457 in words is "three million, nine hundred forty-four thousand, four hundred fifty-seven".