986949689 has 6 divisors (see below), whose sum is σ = 1084829130. Its totient is φ = 897226880.

The previous prime is 986949653. The next prime is 986949727.

986949689 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 917060089 + 69889600 = 30283^2 + 8360^2 .

It is not a de Polignac number, because 986949689 - 2¹² = 986945593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (986945689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4078184 + ... + 4078425.

It is an arithmetic number, because the mean of its divisors is an integer number (180804855).

Almost surely, 2^986949689 is an apocalyptic number.

It is an amenable number.

986949689 is a deficient number, since it is larger than the sum of its proper divisors (97879441).

986949689 is a wasteful number, since it uses less digits than its factorization.

986949689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8156631 (or 8156620 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 68.

The square root of 986949689 is about 31415.7554262189. The cubic root of 986949689 is about 995.6308345283.

The spelling of 986949689 in words is "nine hundred eighty-six million, nine hundred forty-nine thousand, six hundred eighty-nine".