986409481 has 2 divisors, whose sum is σ = 986409482. Its totient is φ = 986409480.

The previous prime is 986409449. The next prime is 986409493. The reversal of 986409481 is 184904689.

986409481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 937339456 + 49070025 = 30616^2 + 7005^2 .

It is an emirp because it is prime and its reverse (184904689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 986409481 - 2⁵ = 986409449 is a prime.

It is a super-2 number, since 2×986409481² = 1946007328413378722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (986409401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493204740 + 493204741.

It is an arithmetic number, because the mean of its divisors is an integer number (493204741).

Almost surely, 2^986409481 is an apocalyptic number.

It is an amenable number.

986409481 is a deficient number, since it is larger than the sum of its proper divisors (1).

986409481 is an equidigital number, since it uses as much as digits as its factorization.

986409481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 986409481 is about 31407.1565252253. The cubic root of 986409481 is about 995.4491481640.

The spelling of 986409481 in words is "nine hundred eighty-six million, four hundred nine thousand, four hundred eighty-one".