1047005989 has 2 divisors, whose sum is σ = 1047005990. Its totient is φ = 1047005988.

The previous prime is 1047005969. The next prime is 1047006019. The reversal of 1047005989 is 9895007401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1043613025 + 3392964 = 32305^2 + 1842^2 .

It is an emirp because it is prime and its reverse (9895007401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1047005989 - 2¹³ = 1046997797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047005959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523502994 + 523502995.

It is an arithmetic number, because the mean of its divisors is an integer number (523502995).

Almost surely, 2^1047005989 is an apocalyptic number.

It is an amenable number.

1047005989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047005989 is an equidigital number, since it uses as much as digits as its factorization.

1047005989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 1047005989 is about 32357.4719191719. The cubic root of 1047005989 is about 1015.4293730466.

The spelling of 1047005989 in words is "one billion, forty-seven million, five thousand, nine hundred eighty-nine".