1043039989 has 2 divisors, whose sum is σ = 1043039990. Its totient is φ = 1043039988.

The previous prime is 1043039983. The next prime is 1043040091. The reversal of 1043039989 is 9899303401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726733764 + 316306225 = 26958^2 + 17785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043039989 - 2⁹ = 1043039477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043039983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521519994 + 521519995.

It is an arithmetic number, because the mean of its divisors is an integer number (521519995).

Almost surely, 2^1043039989 is an apocalyptic number.

It is an amenable number.

1043039989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043039989 is an equidigital number, since it uses as much as digits as its factorization.

1043039989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 1043039989 is about 32296.1296287961. The cubic root of 1043039989 is about 1014.1456209030.

The spelling of 1043039989 in words is "one billion, forty-three million, thirty-nine thousand, nine hundred eighty-nine".