744749 has 8 divisors (see below), whose sum is σ = 784920. Its totient is φ = 705600.

The previous prime is 744739. The next prime is 744761. The reversal of 744749 is 947447.

It can be written as a sum of positive squares in 4 ways, for example, as 47524 + 697225 = 218^2 + 835^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 744749 - 2⁸ = 744493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (98115).

2⁷⁴⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

744749 is a deficient number, since it is larger than the sum of its proper divisors (40171).

744749 is a wasteful number, since it uses less digits than its factorization.

744749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its digits is 28224, while the sum is 35.

The square root of 744749 is about 862.9884124367. The cubic root of 744749 is about 90.6434950758.

The spelling of 744749 in words is "seven hundred forty-four thousand, seven hundred forty-nine".