747889 has 2 divisors, whose sum is σ = 747890. Its totient is φ = 747888.

The previous prime is 747871. The next prime is 747917. The reversal of 747889 is 988747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 369664 = 615^2 + 608^2 .

It is a cyclic number.

It is not a de Polignac number, because 747889 - 2⁹ = 747377 is a prime.

It is not a weakly prime, because it can be changed into another prime (747829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373944 + 373945.

It is an arithmetic number, because the mean of its divisors is an integer number (373945).

2⁷⁴⁷⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

747889 is a deficient number, since it is larger than the sum of its proper divisors (1).

747889 is an equidigital number, since it uses as much as digits as its factorization.

747889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 43.

The square root of 747889 is about 864.8057585377. The cubic root of 747889 is about 90.7707063933.

The spelling of 747889 in words is "seven hundred forty-seven thousand, eight hundred eighty-nine".