724223393 has 2 divisors, whose sum is σ = 724223394. Its totient is φ = 724223392.

The previous prime is 724223347. The next prime is 724223411. The reversal of 724223393 is 393322427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531901969 + 192321424 = 23063^2 + 13868^2 .

It is a cyclic number.

It is not a de Polignac number, because 724223393 - 2¹² = 724219297 is a prime.

It is not a weakly prime, because it can be changed into another prime (724223593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362111696 + 362111697.

It is an arithmetic number, because the mean of its divisors is an integer number (362111697).

Almost surely, 2^724223393 is an apocalyptic number.

It is an amenable number.

724223393 is a deficient number, since it is larger than the sum of its proper divisors (1).

724223393 is an equidigital number, since it uses as much as digits as its factorization.

724223393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 35.

The square root of 724223393 is about 26911.3989417124. The cubic root of 724223393 is about 898.0300091823.

The spelling of 724223393 in words is "seven hundred twenty-four million, two hundred twenty-three thousand, three hundred ninety-three".