985709423241 has 9 divisors (see below), whose sum is σ = 1423806802509. Its totient is φ = 657137629836.

The previous prime is 985709423191. The next prime is 985709423269. The reversal of 985709423241 is 142324907589.

The square root of 985709423241 is 992829.

It is a perfect power (a square), and thus also a powerful number.

985709423241 is a `hidden beast` number, since 9 + 8 + 570 + 9 + 4 + 23 + 2 + 41 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 985709423241 - 2¹³ = 985709415049 is a prime.

It is a super-2 number, since 2×985709423241² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (985709425241) 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 8 ways as a sum of consecutive naturals, for example, 2813016 + ... + 3143958.

Almost surely, 2^985709423241 is an apocalyptic number.

985709423241 is the 992829-th square number.

985709423241 is the 496415-th centered octagonal number.

It is an amenable number.

985709423241 is a deficient number, since it is larger than the sum of its proper divisors (438097379268).

985709423241 is an frugal number, since it uses more digits than its factorization.

985709423241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661892 (or 330946 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 985709423241 in words is "nine hundred eighty-five billion, seven hundred nine million, four hundred twenty-three thousand, two hundred forty-one".