726449 has 4 divisors (see below), whose sum is σ = 738420. Its totient is φ = 714480.

The previous prime is 726431. The next prime is 726457. The reversal of 726449 is 944627.

726449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944627 = 617 ⋅1531.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 616225 = 332^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 726449 - 2¹² = 722353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5894 + ... + 6015.

It is an arithmetic number, because the mean of its divisors is an integer number (184605).

2⁷²⁶⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

726449 is a deficient number, since it is larger than the sum of its proper divisors (11971).

726449 is a wasteful number, since it uses less digits than its factorization.

726449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970.

The product of its digits is 12096, while the sum is 32.

The square root of 726449 is about 852.3197756711. The cubic root of 726449 is about 89.8948978855.

It can be divided in two parts, 72644 and 9, that multiplied together give a triangular number (653796 = T₁₁₄₃).

The spelling of 726449 in words is "seven hundred twenty-six thousand, four hundred forty-nine".