985999421 has 16 divisors (see below), whose sum is σ = 1106128320. Its totient is φ = 871015680.

The previous prime is 985999411. The next prime is 985999453. The reversal of 985999421 is 124999589.

985999421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985999421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985999411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605210 + ... + 606836.

It is an arithmetic number, because the mean of its divisors is an integer number (69133020).

Almost surely, 2^985999421 is an apocalyptic number.

It is an amenable number.

985999421 is a deficient number, since it is larger than the sum of its proper divisors (120128899).

985999421 is a wasteful number, since it uses less digits than its factorization.

985999421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164.

The product of its digits is 2099520, while the sum is 56.

The square root of 985999421 is about 31400.6277166556. The cubic root of 985999421 is about 995.3111897529.

The spelling of 985999421 in words is "nine hundred eighty-five million, nine hundred ninety-nine thousand, four hundred twenty-one".