744386 has 8 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 364228.

The previous prime is 744377. The next prime is 744389. The reversal of 744386 is 683447.

It is a happy number.

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

It is a super-3 number, since 3×744386³ = 1237416333913753368, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744389) by changing a digit.

744386 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3866 + ... + 4053.

It is an arithmetic number, because the mean of its divisors is an integer number (142560).

2⁷⁴⁴³⁸⁶ is an apocalyptic number.

744386 is a deficient number, since it is larger than the sum of its proper divisors (396094).

744386 is a wasteful number, since it uses less digits than its factorization.

744386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968.

The product of its digits is 16128, while the sum is 32.

The square root of 744386 is about 862.7780711168. The cubic root of 744386 is about 90.6287657571.

The spelling of 744386 in words is "seven hundred forty-four thousand, three hundred eighty-six".