986615849 has 2 divisors, whose sum is σ = 986615850. Its totient is φ = 986615848.

The previous prime is 986615821. The next prime is 986615857. The reversal of 986615849 is 948516689.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521437225 + 465178624 = 22835^2 + 21568^2 .

It is a cyclic number.

It is not a de Polignac number, because 986615849 - 2⁸ = 986615593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 986615794 and 986615803.

It is not a weakly prime, because it can be changed into another prime (986612849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493307924 + 493307925.

It is an arithmetic number, because the mean of its divisors is an integer number (493307925).

Almost surely, 2^986615849 is an apocalyptic number.

It is an amenable number.

986615849 is a deficient number, since it is larger than the sum of its proper divisors (1).

986615849 is an equidigital number, since it uses as much as digits as its factorization.

986615849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 56.

The square root of 986615849 is about 31410.4417192755. The cubic root of 986615849 is about 995.5185630569.

The spelling of 986615849 in words is "nine hundred eighty-six million, six hundred fifteen thousand, eight hundred forty-nine".