6444402 has 8 divisors (see below), whose sum is σ = 12888816. Its totient is φ = 2148132.

The previous prime is 6444391. The next prime is 6444413. The reversal of 6444402 is 2044446.

It is an interprime number because it is at equal distance from previous prime (6444391) and next prime (6444413).

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

6444402 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537028 + ... + 537039.

It is an arithmetic number, because the mean of its divisors is an integer number (1611102).

Almost surely, 2^6444402 is an apocalyptic number.

6444402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6444402 is a wasteful number, since it uses less digits than its factorization.

6444402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074072.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 6444402 is about 2538.5826754313. The cubic root of 6444402 is about 186.0919305068.

Adding to 6444402 its reverse (2044446), we get a palindrome (8488848).

The spelling of 6444402 in words is "six million, four hundred forty-four thousand, four hundred two".