9890797 has 12 divisors (see below), whose sum is σ = 11671776. Its totient is φ = 8355480.

The previous prime is 9890791. The next prime is 9890813. The reversal of 9890797 is 7970989.

It is not a de Polignac number, because 9890797 - 2³ = 9890789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

9890797 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9890797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890791) 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, 2058 + ... + 4900.

It is an arithmetic number, because the mean of its divisors is an integer number (972648).

Almost surely, 2^9890797 is an apocalyptic number.

It is an amenable number.

9890797 is a deficient number, since it is larger than the sum of its proper divisors (1780979).

9890797 is a wasteful number, since it uses less digits than its factorization.

9890797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928 (or 2921 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 9890797 is about 3144.9637517784. The cubic root of 9890797 is about 214.6563610890.

The spelling of 9890797 in words is "nine million, eight hundred ninety thousand, seven hundred ninety-seven".