9780040 has 32 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 3881664.

The previous prime is 9780031. The next prime is 9780053. The reversal of 9780040 is 400879.

It is a junction number, because it is equal to n+sod(n) for n = 9779990 and 9780008.

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 7 ways as a sum of consecutive naturals, for example, 4681 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (693000).

Almost surely, 2^9780040 is an apocalyptic number.

It is an amenable number.

9780040 is an abundant number, since it is smaller than the sum of its proper divisors (12395960).

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

9780040 is a wasteful number, since it uses less digits than its factorization.

9780040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 9780040 is about 3127.3055495106. The cubic root of 9780040 is about 213.8521119904.

The spelling of 9780040 in words is "nine million, seven hundred eighty thousand, forty".