748243289 has 2 divisors, whose sum is σ = 748243290. Its totient is φ = 748243288.

The previous prime is 748243277. The next prime is 748243319. The reversal of 748243289 is 982342847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731161600 + 17081689 = 27040^2 + 4133^2 .

It is an emirp because it is prime and its reverse (982342847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 748243289 - 2⁸ = 748243033 is a prime.

It is not a weakly prime, because it can be changed into another prime (748243229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374121644 + 374121645.

It is an arithmetic number, because the mean of its divisors is an integer number (374121645).

Almost surely, 2^748243289 is an apocalyptic number.

It is an amenable number.

748243289 is a deficient number, since it is larger than the sum of its proper divisors (1).

748243289 is an equidigital number, since it uses as much as digits as its factorization.

748243289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 748243289 is about 27354.0360641716. The cubic root of 748243289 is about 907.8503739070.

The spelling of 748243289 in words is "seven hundred forty-eight million, two hundred forty-three thousand, two hundred eighty-nine".