986163917 has 4 divisors (see below), whose sum is σ = 1007146176. Its totient is φ = 965181660.

The previous prime is 986163901. The next prime is 986163929. The reversal of 986163917 is 719361689.

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: 719361689 = 59 ⋅12192571.

It is not a de Polignac number, because 986163917 - 2⁴ = 986163901 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 (986163967) 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, 10491059 + ... + 10491152.

It is an arithmetic number, because the mean of its divisors is an integer number (251786544).

Almost surely, 2^986163917 is an apocalyptic number.

It is an amenable number.

986163917 is a deficient number, since it is larger than the sum of its proper divisors (20982259).

986163917 is a wasteful number, since it uses less digits than its factorization.

986163917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20982258.

The product of its digits is 489888, while the sum is 50.

The square root of 986163917 is about 31403.2469181134. The cubic root of 986163917 is about 995.3665365080.

The spelling of 986163917 in words is "nine hundred eighty-six million, one hundred sixty-three thousand, nine hundred seventeen".