9997001 has 4 divisors (see below), whose sum is σ = 11425152. Its totient is φ = 8568852.

The previous prime is 9996991. The next prime is 9997007. The reversal of 9997001 is 1007999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1007999 = 127 ⋅7937.

It is a cyclic number.

It is not a de Polignac number, because 9997001 - 2⁶ = 9996937 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9997007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714065 + ... + 714078.

It is an arithmetic number, because the mean of its divisors is an integer number (2856288).

Almost surely, 2^9997001 is an apocalyptic number.

It is an amenable number.

9997001 is a deficient number, since it is larger than the sum of its proper divisors (1428151).

9997001 is a wasteful number, since it uses less digits than its factorization.

9997001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428150.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 9997001 is about 3161.8034410760. The cubic root of 9997001 is about 215.4219296844.

It can be divided in two parts, 999 and 7001, that added together give a cube (8000 = 20³).

The spelling of 9997001 in words is "nine million, nine hundred ninety-seven thousand, one".