9280840440 has 64 divisors (see below), whose sum is σ = 27902309760. Its totient is φ = 2469576320.

The previous prime is 9280840433. The next prime is 9280840463. The reversal of 9280840440 is 440480829.

It is a super-2 number, since 2×9280840440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26766 + ... + 138845.

It is an arithmetic number, because the mean of its divisors is an integer number (435973590).

Almost surely, 2^9280840440 is an apocalyptic number.

It is an amenable number.

9280840440 is an abundant number, since it is smaller than the sum of its proper divisors (18621469320).

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

9280840440 is a wasteful number, since it uses less digits than its factorization.

9280840440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166092 (or 166088 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 9280840440 is about 96337.1187030212. The cubic root of 9280840440 is about 2101.4985856654.

The spelling of 9280840440 in words is "nine billion, two hundred eighty million, eight hundred forty thousand, four hundred forty".