9903172489 has 32 divisors (see below), whose sum is σ = 11724480000. Its totient is φ = 8360174592.

The previous prime is 9903172471. The next prime is 9903172603. The reversal of 9903172489 is 9842713099.

It is a happy number.

It is not a de Polignac number, because 9903172489 - 2¹⁹ = 9902648201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9903172439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10775572 + ... + 10776490.

It is an arithmetic number, because the mean of its divisors is an integer number (366390000).

Almost surely, 2^9903172489 is an apocalyptic number.

It is an amenable number.

9903172489 is a deficient number, since it is larger than the sum of its proper divisors (1821307511).

9903172489 is an equidigital number, since it uses as much as digits as its factorization.

9903172489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 9903172489 is about 99514.6847907383. The cubic root of 9903172489 is about 2147.4585068438.

The spelling of 9903172489 in words is "nine billion, nine hundred three million, one hundred seventy-two thousand, four hundred eighty-nine".