724713449 has 2 divisors, whose sum is σ = 724713450. Its totient is φ = 724713448.

The previous prime is 724713433. The next prime is 724713491. The reversal of 724713449 is 944317427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552579049 + 172134400 = 23507^2 + 13120^2 .

It is an emirp because it is prime and its reverse (944317427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724713449 - 2⁴ = 724713433 is a prime.

It is a super-2 number, since 2×724713449² = 1050419166322951202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (724713419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362356724 + 362356725.

It is an arithmetic number, because the mean of its divisors is an integer number (362356725).

Almost surely, 2^724713449 is an apocalyptic number.

It is an amenable number.

724713449 is a deficient number, since it is larger than the sum of its proper divisors (1).

724713449 is an equidigital number, since it uses as much as digits as its factorization.

724713449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 724713449 is about 26920.5023913002. The cubic root of 724713449 is about 898.2325184138.

The spelling of 724713449 in words is "seven hundred twenty-four million, seven hundred thirteen thousand, four hundred forty-nine".