6444392 has 16 divisors (see below), whose sum is σ = 12113700. Its totient is φ = 3214080.

The previous prime is 6444391. The next prime is 6444413. The reversal of 6444392 is 2934446.

It can be written as a sum of positive squares in 2 ways, for example, as 6180196 + 264196 = 2486^2 + 514^2 .

It is a d-powerful number, because it can be written as 6⁴ + 4 + 4⁴ + 4⁸ + 3¹³ + 9⁷ + 2³ .

It is not an unprimeable number, because it can be changed into a prime (6444391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3584 + ... + 5072.

Almost surely, 2^6444392 is an apocalyptic number.

It is an amenable number.

6444392 is a deficient number, since it is larger than the sum of its proper divisors (5669308).

6444392 is a wasteful number, since it uses less digits than its factorization.

6444392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2032 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 6444392 is about 2538.5807058276. The cubic root of 6444392 is about 186.0918342517.

The spelling of 6444392 in words is "six million, four hundred forty-four thousand, three hundred ninety-two".