9986501 has 4 divisors (see below), whose sum is σ = 11413152. Its totient is φ = 8559852.

The previous prime is 9986489. The next prime is 9986503. The reversal of 9986501 is 1056899.

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: 1056899 = 211 ⋅5009.

It is a de Polignac number, because none of the positive numbers 2^k-9986501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986503) 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, 713315 + ... + 713328.

It is an arithmetic number, because the mean of its divisors is an integer number (2853288).

Almost surely, 2^9986501 is an apocalyptic number.

It is an amenable number.

9986501 is a deficient number, since it is larger than the sum of its proper divisors (1426651).

9986501 is a wasteful number, since it uses less digits than its factorization.

9986501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426650.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 9986501 is about 3160.1425600754. The cubic root of 9986501 is about 215.3464829700.

The spelling of 9986501 in words is "nine million, nine hundred eighty-six thousand, five hundred one".