9970798 has 4 divisors (see below), whose sum is σ = 14956200. Its totient is φ = 4985398.

The previous prime is 9970787. The next prime is 9970811. The reversal of 9970798 is 8970799.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492698 + ... + 2492701.

It is an arithmetic number, because the mean of its divisors is an integer number (3739050).

Almost surely, 2^9970798 is an apocalyptic number.

9970798 is a deficient number, since it is larger than the sum of its proper divisors (4985402).

9970798 is a wasteful number, since it uses less digits than its factorization.

9970798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985401.

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

The square root of 9970798 is about 3157.6570428088. The cubic root of 9970798 is about 215.2335518643.

Subtracting from 9970798 its reverse (8970799), we obtain a palindrome (999999).

The spelling of 9970798 in words is "nine million, nine hundred seventy thousand, seven hundred ninety-eight".