6401044 has 36 divisors (see below), whose sum is σ = 12866364. Its totient is φ = 2775552.

The previous prime is 6401033. The next prime is 6401069. The reversal of 6401044 is 4401046.

It can be written as a sum of positive squares in 6 ways, for example, as 1392400 + 5008644 = 1180^2 + 2238^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11214 + ... + 11770.

It is an arithmetic number, because the mean of its divisors is an integer number (357399).

Almost surely, 2^6401044 is an apocalyptic number.

It is an amenable number.

6401044 is an abundant number, since it is smaller than the sum of its proper divisors (6465320).

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

6401044 is a wasteful number, since it uses less digits than its factorization.

6401044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 6401044 is about 2530.0284583380. The cubic root of 6401044 is about 185.6736482513.

The spelling of 6401044 in words is "six million, four hundred one thousand, forty-four".