1004492089 has 2 divisors, whose sum is σ = 1004492090. Its totient is φ = 1004492088.

The previous prime is 1004492033. The next prime is 1004492113. The reversal of 1004492089 is 9802944001.

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., 881614864 + 122877225 = 29692^2 + 11085^2 .

It is an emirp because it is prime and its reverse (9802944001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1004492089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1004492009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502246044 + 502246045.

It is an arithmetic number, because the mean of its divisors is an integer number (502246045).

Almost surely, 2^1004492089 is an apocalyptic number.

It is an amenable number.

1004492089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004492089 is an equidigital number, since it uses as much as digits as its factorization.

1004492089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1004492089 is about 31693.7231798348. The cubic root of 1004492089 is about 1001.4951264827.

The spelling of 1004492089 in words is "one billion, four million, four hundred ninety-two thousand, eighty-nine".