986654421 has 12 divisors (see below), whose sum is σ = 1427644972. Its totient is φ = 656626176.

The previous prime is 986654371. The next prime is 986654429. The reversal of 986654421 is 124456689.

986654421 is a `hidden beast` number, since 9 + 86 + 6 + 544 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 556299396 + 430355025 = 23586^2 + 20745^2 .

It is not a de Polignac number, because 986654421 - 2²⁷ = 852436693 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986654429) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89806 + ... + 100191.

Almost surely, 2^986654421 is an apocalyptic number.

It is an amenable number.

986654421 is a deficient number, since it is larger than the sum of its proper divisors (440990551).

986654421 is a wasteful number, since it uses less digits than its factorization.

986654421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190580 (or 190577 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 986654421 is about 31411.0557129174. The cubic root of 986654421 is about 995.5315362391.

The spelling of 986654421 in words is "nine hundred eighty-six million, six hundred fifty-four thousand, four hundred twenty-one".