986797897 has 4 divisors (see below), whose sum is σ = 986884756. Its totient is φ = 986711040.

The previous prime is 986797891. The next prime is 986797901. The reversal of 986797897 is 798797689.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 457061641 + 529736256 = 21379^2 + 23016^2 .

It is a cyclic number.

It is not a de Polignac number, because 986797897 - 2¹⁹ = 986273609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (986797891) 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, 23268 + ... + 50149.

It is an arithmetic number, because the mean of its divisors is an integer number (246721189).

Almost surely, 2^986797897 is an apocalyptic number.

986797897 is the 18137-th hex number.

It is an amenable number.

986797897 is a deficient number, since it is larger than the sum of its proper divisors (86859).

986797897 is a wasteful number, since it uses less digits than its factorization.

986797897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86858.

The product of its digits is 96018048, while the sum is 70.

The square root of 986797897 is about 31413.3394754521. The cubic root of 986797897 is about 995.5797895271.

The spelling of 986797897 in words is "nine hundred eighty-six million, seven hundred ninety-seven thousand, eight hundred ninety-seven".