9878272492 has 24 divisors (see below), whose sum is σ = 18883694592. Its totient is φ = 4484130000.

The previous prime is 9878272441. The next prime is 9878272499. The reversal of 9878272492 is 2942728789.

It is not an unprimeable number, because it can be changed into a prime (9878272499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116428 + ... + 182515.

It is an arithmetic number, because the mean of its divisors is an integer number (786820608).

Almost surely, 2^9878272492 is an apocalyptic number.

It is an amenable number.

9878272492 is a deficient number, since it is larger than the sum of its proper divisors (9005422100).

9878272492 is a wasteful number, since it uses less digits than its factorization.

9878272492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299709 (or 299707 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 58.

The square root of 9878272492 is about 99389.4989020470. The cubic root of 9878272492 is about 2145.6571787477.

The spelling of 9878272492 in words is "nine billion, eight hundred seventy-eight million, two hundred seventy-two thousand, four hundred ninety-two".