9987654322 has 8 divisors (see below), whose sum is σ = 14983652736. Its totient is φ = 4993103412.

The previous prime is 9987654263. The next prime is 9987654329. The reversal of 9987654322 is 2234567899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9987654329) 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, 344458 + ... + 372325.

It is an arithmetic number, because the mean of its divisors is an integer number (1872956592).

Almost surely, 2^9987654322 is an apocalyptic number.

9987654322 is a deficient number, since it is larger than the sum of its proper divisors (4995998414).

9987654322 is a wasteful number, since it uses less digits than its factorization.

9987654322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723752.

The product of its digits is 6531840, while the sum is 55.

The square root of 9987654322 is about 99938.2525462598. The cubic root of 9987654322 is about 2153.5477263609.

Adding to 9987654322 its reverse (2234567899), we get a palindrome (12222222221).

The spelling of 9987654322 in words is "nine billion, nine hundred eighty-seven million, six hundred fifty-four thousand, three hundred twenty-two".