9980867 has 4 divisors (see below), whose sum is σ = 10748640. Its totient is φ = 9213096.

The previous prime is 9980863. The next prime is 9980869. The reversal of 9980867 is 7680899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7680899 = 41 ⋅187339.

It is a cyclic number.

It is not a de Polignac number, because 9980867 - 2² = 9980863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9980863) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 383867 + ... + 383892.

It is an arithmetic number, because the mean of its divisors is an integer number (2687160).

Almost surely, 2^9980867 is an apocalyptic number.

9980867 is a deficient number, since it is larger than the sum of its proper divisors (767773).

9980867 is a wasteful number, since it uses less digits than its factorization.

9980867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767772.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 9980867 is about 3159.2510188334. The cubic root of 9980867 is about 215.3059786160.

Subtracting from 9980867 its reverse (7680899), we obtain a cube (2299968 = 132³).

The spelling of 9980867 in words is "nine million, nine hundred eighty thousand, eight hundred sixty-seven".