9398987280 has 240 divisors, whose sum is σ = 33065008704. Its totient is φ = 2481062400.

The previous prime is 9398987249. The next prime is 9398987293. The reversal of 9398987280 is 827898939.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1961047 + ... + 1965833.

Almost surely, 2^9398987280 is an apocalyptic number.

9398987280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9398987280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16532504352).

9398987280 is an abundant number, since it is smaller than the sum of its proper divisors (23666021424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9398987280 is a wasteful number, since it uses less digits than its factorization.

9398987280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916 (or 4898 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The square root of 9398987280 is about 96948.3743030279. The cubic root of 9398987280 is about 2110.3785010138.

The spelling of 9398987280 in words is "nine billion, three hundred ninety-eight million, nine hundred eighty-seven thousand, two hundred eighty".