9980001 has 12 divisors (see below), whose sum is σ = 14506128. Its totient is φ = 6611544.

The previous prime is 9979993. The next prime is 9980017. The reversal of 9980001 is 1000899.

It is not a de Polignac number, because 9980001 - 2³ = 9979993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9980021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1935 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (1208844).

Almost surely, 2^9980001 is an apocalyptic number.

It is an amenable number.

9980001 is a deficient number, since it is larger than the sum of its proper divisors (4526127).

9980001 is a wasteful number, since it uses less digits than its factorization.

9980001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6972 (or 6969 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 9980001 is about 3159.1139580585. The cubic root of 9980001 is about 215.2997513557.

It can be divided in two parts, 998000 and 1, that added together give a square (998001 = 999²).

The spelling of 9980001 in words is "nine million, nine hundred eighty thousand, one".