724908449 has 2 divisors, whose sum is σ = 724908450. Its totient is φ = 724908448.

The previous prime is 724908427. The next prime is 724908461. The reversal of 724908449 is 944809427.

724908449 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., 721298449 + 3610000 = 26857^2 + 1900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724908449 is a prime.

It is not a weakly prime, because it can be changed into another prime (724908409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362454224 + 362454225.

It is an arithmetic number, because the mean of its divisors is an integer number (362454225).

Almost surely, 2^724908449 is an apocalyptic number.

It is an amenable number.

724908449 is a deficient number, since it is larger than the sum of its proper divisors (1).

724908449 is an equidigital number, since it uses as much as digits as its factorization.

724908449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 724908449 is about 26924.1239226089. The cubic root of 724908449 is about 898.3130742224.

The spelling of 724908449 in words is "seven hundred twenty-four million, nine hundred eight thousand, four hundred forty-nine".