731072449 has 2 divisors, whose sum is σ = 731072450. Its totient is φ = 731072448.

The previous prime is 731072431. The next prime is 731072453. The reversal of 731072449 is 944270137.

731072449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370832049 + 360240400 = 19257^2 + 18980^2 .

It is a cyclic number.

It is not a de Polignac number, because 731072449 - 2⁵ = 731072417 is a prime.

It is not a weakly prime, because it can be changed into another prime (731072149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365536224 + 365536225.

It is an arithmetic number, because the mean of its divisors is an integer number (365536225).

Almost surely, 2^731072449 is an apocalyptic number.

It is an amenable number.

731072449 is a deficient number, since it is larger than the sum of its proper divisors (1).

731072449 is an equidigital number, since it uses as much as digits as its factorization.

731072449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 731072449 is about 27038.3514475273. The cubic root of 731072449 is about 900.8520527563.

The spelling of 731072449 in words is "seven hundred thirty-one million, seventy-two thousand, four hundred forty-nine".