744406 has 8 divisors (see below), whose sum is σ = 1202544. Its totient is φ = 343560.

The previous prime is 744397. The next prime is 744407. The reversal of 744406 is 604447.

It is a happy number.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 744406.

It is not an unprimeable number, because it can be changed into a prime (744407) by changing a digit.

744406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14290 + ... + 14341.

It is an arithmetic number, because the mean of its divisors is an integer number (150318).

2⁷⁴⁴⁴⁰⁶ is an apocalyptic number.

744406 is a deficient number, since it is larger than the sum of its proper divisors (458138).

744406 is a wasteful number, since it uses less digits than its factorization.

744406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28646.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 744406 is about 862.7896615051. The cubic root of 744406 is about 90.6295774145.

The spelling of 744406 in words is "seven hundred forty-four thousand, four hundred six".