724929449 has 4 divisors (see below), whose sum is σ = 725868036. Its totient is φ = 723990864.

The previous prime is 724929431. The next prime is 724929463. The reversal of 724929449 is 944929427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52823824 + 672105625 = 7268^2 + 25925^2 .

It is a cyclic number.

It is not a de Polignac number, because 724929449 - 2²⁰ = 723880873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724929397 and 724929406.

It is not an unprimeable number, because it can be changed into a prime (724923449) 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, 468134 + ... + 469679.

It is an arithmetic number, because the mean of its divisors is an integer number (181467009).

Almost surely, 2^724929449 is an apocalyptic number.

It is an amenable number.

724929449 is a deficient number, since it is larger than the sum of its proper divisors (938587).

724929449 is an equidigital number, since it uses as much as digits as its factorization.

724929449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938586.

The product of its digits is 1306368, while the sum is 50.

The square root of 724929449 is about 26924.5139046186. The cubic root of 724929449 is about 898.3217486016.

The spelling of 724929449 in words is "seven hundred twenty-four million, nine hundred twenty-nine thousand, four hundred forty-nine".