9890071 has 4 divisors (see below), whose sum is σ = 10037752. Its totient is φ = 9742392.

The previous prime is 9890057. The next prime is 9890077. The reversal of 9890071 is 1700989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1700989 = 113 ⋅15053.

It is a cyclic number.

It is not a de Polignac number, because 9890071 - 2⁹ = 9889559 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 (9890077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73740 + ... + 73873.

It is an arithmetic number, because the mean of its divisors is an integer number (2509438).

Almost surely, 2^9890071 is an apocalyptic number.

9890071 is a deficient number, since it is larger than the sum of its proper divisors (147681).

9890071 is a wasteful number, since it uses less digits than its factorization.

9890071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147680.

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

The square root of 9890071 is about 3144.8483270263. The cubic root of 9890071 is about 214.6511089227.

The spelling of 9890071 in words is "nine million, eight hundred ninety thousand, seventy-one".