10009978 has 16 divisors (see below), whose sum is σ = 16650720. Its totient is φ = 4474800.

The previous prime is 10009963. The next prime is 10009981. The reversal of 10009978 is 87990001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2388 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (1040670).

Almost surely, 2^10009978 is an apocalyptic number.

10009978 is a deficient number, since it is larger than the sum of its proper divisors (6640742).

10009978 is a wasteful number, since it uses less digits than its factorization.

10009978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7533.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 10009978 is about 3163.8549271419. The cubic root of 10009978 is about 215.5151016812.

Adding to 10009978 its reverse (87990001), we get a palindrome (97999979).

The spelling of 10009978 in words is "ten million, nine thousand, nine hundred seventy-eight".