1030428989 has 2 divisors, whose sum is σ = 1030428990. Its totient is φ = 1030428988.

The previous prime is 1030428961. The next prime is 1030429009. The reversal of 1030428989 is 9898240301.

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., 720492964 + 309936025 = 26842^2 + 17605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030428989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1030428929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515214494 + 515214495.

It is an arithmetic number, because the mean of its divisors is an integer number (515214495).

Almost surely, 2^1030428989 is an apocalyptic number.

It is an amenable number.

1030428989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030428989 is an equidigital number, since it uses as much as digits as its factorization.

1030428989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1030428989 is about 32100.2957774535. The cubic root of 1030428989 is about 1010.0418206387.

It can be divided in two parts, 10304 and 28989, that added together give a palindrome (39293).

The spelling of 1030428989 in words is "one billion, thirty million, four hundred twenty-eight thousand, nine hundred eighty-nine".