630089389 has 2 divisors, whose sum is σ = 630089390. Its totient is φ = 630089388.

The previous prime is 630089371. The next prime is 630089413. The reversal of 630089389 is 983980036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565012900 + 65076489 = 23770^2 + 8067^2 .

It is a cyclic number.

It is not a de Polignac number, because 630089389 - 2⁵ = 630089357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630089329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315044694 + 315044695.

It is an arithmetic number, because the mean of its divisors is an integer number (315044695).

Almost surely, 2^630089389 is an apocalyptic number.

It is an amenable number.

630089389 is a deficient number, since it is larger than the sum of its proper divisors (1).

630089389 is an equidigital number, since it uses as much as digits as its factorization.

630089389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 630089389 is about 25101.5814043657. The cubic root of 630089389 is about 857.3024311726.

The spelling of 630089389 in words is "six hundred thirty million, eighty-nine thousand, three hundred eighty-nine".