726205399 has 4 divisors (see below), whose sum is σ = 727548280. Its totient is φ = 724862520.

The previous prime is 726205397. The next prime is 726205421. The reversal of 726205399 is 993502627.

726205399 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.

It is a cyclic number.

It is not a de Polignac number, because 726205399 - 2¹ = 726205397 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 (726205391) 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, 670629 + ... + 671710.

It is an arithmetic number, because the mean of its divisors is an integer number (181887070).

Almost surely, 2^726205399 is an apocalyptic number.

726205399 is a deficient number, since it is larger than the sum of its proper divisors (1342881).

726205399 is a wasteful number, since it uses less digits than its factorization.

726205399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342880.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 726205399 is about 26948.1984370013. The cubic root of 726205399 is about 898.8484857478.

The spelling of 726205399 in words is "seven hundred twenty-six million, two hundred five thousand, three hundred ninety-nine".