633873389 has 2 divisors, whose sum is σ = 633873390. Its totient is φ = 633873388.

The previous prime is 633873377. The next prime is 633873413. The reversal of 633873389 is 983378336.

633873389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628504900 + 5368489 = 25070^2 + 2317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-633873389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633873319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316936694 + 316936695.

It is an arithmetic number, because the mean of its divisors is an integer number (316936695).

Almost surely, 2^633873389 is an apocalyptic number.

It is an amenable number.

633873389 is a deficient number, since it is larger than the sum of its proper divisors (1).

633873389 is an equidigital number, since it uses as much as digits as its factorization.

633873389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 50.

The square root of 633873389 is about 25176.8423159061. The cubic root of 633873389 is about 859.0151828483.

The spelling of 633873389 in words is "six hundred thirty-three million, eight hundred seventy-three thousand, three hundred eighty-nine".