9894839074709 has 4 divisors (see below), whose sum is σ = 9906070447980. Its totient is φ = 9883607701440.

The previous prime is 9894839074691. The next prime is 9894839074787. The reversal of 9894839074709 is 9074709384989.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5597468614609 + 4297370460100 = 2365897^2 + 2073010^2 .

It is a cyclic number.

It is not a de Polignac number, because 9894839074709 - 2⁸ = 9894839074453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9894839074709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9894839074009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5615685314 + ... + 5615687075.

It is an arithmetic number, because the mean of its divisors is an integer number (2476517611995).

Almost surely, 2^{9894839074709} is an apocalyptic number.

It is an amenable number.

9894839074709 is a deficient number, since it is larger than the sum of its proper divisors (11231373271).

9894839074709 is a wasteful number, since it uses less digits than its factorization.

9894839074709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231373270.

The product of its (nonzero) digits is 987614208, while the sum is 77.

The spelling of 9894839074709 in words is "nine trillion, eight hundred ninety-four billion, eight hundred thirty-nine million, seventy-four thousand, seven hundred nine".