9862407359809 has 3 divisors (see below), whose sum is σ = 9862410500257. Its totient is φ = 9862404219362.

The previous prime is 9862407359741. The next prime is 9862407359813. The reversal of 9862407359809 is 9089537042689.

The square root of 9862407359809 is 3140447.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 9862407359809 - 2¹³ = 9862407351617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9862407359899) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1570224 + ... + 4710670.

Almost surely, 2^{9862407359809} is an apocalyptic number.

9862407359809 is the 3140447-th square number.

9862407359809 is the 1570224-th centered octagonal number.

It is an amenable number.

9862407359809 is a deficient number, since it is larger than the sum of its proper divisors (3140448).

9862407359809 is an frugal number, since it uses more digits than its factorization.

9862407359809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280894 (or 3140447 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 70.

The spelling of 9862407359809 in words is "nine trillion, eight hundred sixty-two billion, four hundred seven million, three hundred fifty-nine thousand, eight hundred nine".