9902489471 has 4 divisors (see below), whose sum is σ = 11317130832. Its totient is φ = 8487848112.

The previous prime is 9902489459. The next prime is 9902489497. The reversal of 9902489471 is 1749842099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9902489471 - 2³⁰ = 8828747647 is a prime.

It is a super-3 number, since 3×9902489471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902479471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707320670 + ... + 707320683.

It is an arithmetic number, because the mean of its divisors is an integer number (2829282708).

Almost surely, 2^9902489471 is an apocalyptic number.

9902489471 is a deficient number, since it is larger than the sum of its proper divisors (1414641361).

9902489471 is a wasteful number, since it uses less digits than its factorization.

9902489471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414641360.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 9902489471 is about 99511.2529867854. The cubic root of 9902489471 is about 2147.4091359129.

The spelling of 9902489471 in words is "nine billion, nine hundred two million, four hundred eighty-nine thousand, four hundred seventy-one".