986401971 has 6 divisors (see below), whose sum is σ = 1424802860. Its totient is φ = 657601308.

The previous prime is 986401951. The next prime is 986401987. The reversal of 986401971 is 179104689.

It is a happy number.

It is not a de Polignac number, because 986401971 - 2⁹ = 986401459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (986401951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54800101 + ... + 54800118.

Almost surely, 2^986401971 is an apocalyptic number.

986401971 is a deficient number, since it is larger than the sum of its proper divisors (438400889).

986401971 is a wasteful number, since it uses less digits than its factorization.

986401971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109600225 (or 109600222 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 986401971 is about 31407.0369662596. The cubic root of 986401971 is about 995.4466218832.

The spelling of 986401971 in words is "nine hundred eighty-six million, four hundred one thousand, nine hundred seventy-one".