1003309989 has 16 divisors (see below), whose sum is σ = 1460089344. Its totient is φ = 607762800.

The previous prime is 1003309963. The next prime is 1003309999. The reversal of 1003309989 is 9899033001.

It is a happy number.

It is not a de Polignac number, because 1003309989 - 2¹¹ = 1003307941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1003309989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003309999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71832 + ... + 84654.

It is an arithmetic number, because the mean of its divisors is an integer number (91255584).

Almost surely, 2^1003309989 is an apocalyptic number.

It is an amenable number.

1003309989 is a deficient number, since it is larger than the sum of its proper divisors (456779355).

1003309989 is a wasteful number, since it uses less digits than its factorization.

1003309989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15208.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 1003309989 is about 31675.0688870601. The cubic root of 1003309989 is about 1001.1021145639.

The spelling of 1003309989 in words is "one billion, three million, three hundred nine thousand, nine hundred eighty-nine".