9936487745 has 4 divisors (see below), whose sum is σ = 11923785300. Its totient is φ = 7949190192.

The previous prime is 9936487739. The next prime is 9936487763. The reversal of 9936487745 is 5477846399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5477846399 = 3701 ⋅1480099.

It can be written as a sum of positive squares in 2 ways, for example, as 5766427969 + 4170059776 = 75937^2 + 64576^2 .

It is a cyclic number.

It is not a de Polignac number, because 9936487745 - 2¹² = 9936483649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993648770 + ... + 993648779.

It is an arithmetic number, because the mean of its divisors is an integer number (2980946325).

Almost surely, 2^9936487745 is an apocalyptic number.

It is an amenable number.

9936487745 is a deficient number, since it is larger than the sum of its proper divisors (1987297555).

9936487745 is a wasteful number, since it uses less digits than its factorization.

9936487745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987297554.

The product of its digits is 45722880, while the sum is 62.

The square root of 9936487745 is about 99681.9328915727. The cubic root of 9936487745 is about 2149.8638994431.

The spelling of 9936487745 in words is "nine billion, nine hundred thirty-six million, four hundred eighty-seven thousand, seven hundred forty-five".