745903289 has 2 divisors, whose sum is σ = 745903290. Its totient is φ = 745903288.

The previous prime is 745903261. The next prime is 745903297. The reversal of 745903289 is 982309547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733597225 + 12306064 = 27085^2 + 3508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745903289 is a prime.

It is not a weakly prime, because it can be changed into another prime (745903889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372951644 + 372951645.

It is an arithmetic number, because the mean of its divisors is an integer number (372951645).

Almost surely, 2^745903289 is an apocalyptic number.

It is an amenable number.

745903289 is a deficient number, since it is larger than the sum of its proper divisors (1).

745903289 is an equidigital number, since it uses as much as digits as its factorization.

745903289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 745903289 is about 27311.2300894705. The cubic root of 745903289 is about 906.9030045627.

The spelling of 745903289 in words is "seven hundred forty-five million, nine hundred three thousand, two hundred eighty-nine".