1172723329 has 2 divisors, whose sum is σ = 1172723330. Its totient is φ = 1172723328.

The previous prime is 1172723303. The next prime is 1172723341. The reversal of 1172723329 is 9233272711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982697104 + 190026225 = 31348^2 + 13785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172723329 - 2¹⁷ = 1172592257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1172723389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586361664 + 586361665.

It is an arithmetic number, because the mean of its divisors is an integer number (586361665).

Almost surely, 2^1172723329 is an apocalyptic number.

It is an amenable number.

1172723329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172723329 is an equidigital number, since it uses as much as digits as its factorization.

1172723329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 1172723329 is about 34245.0482405851. The cubic root of 1172723329 is about 1054.5451732467.

The spelling of 1172723329 in words is "one billion, one hundred seventy-two million, seven hundred twenty-three thousand, three hundred twenty-nine".