9378512099 has 4 divisors (see below), whose sum is σ = 10231104120. Its totient is φ = 8525920080.

The previous prime is 9378512093. The next prime is 9378512113. The reversal of 9378512099 is 9902158739.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9902158739 = 11 ⋅900196249.

It is a cyclic number.

It is not a de Polignac number, because 9378512099 - 2⁴ = 9378512083 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 9378512099.

It is not an unprimeable number, because it can be changed into a prime (9378512093) 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, 426295994 + ... + 426296015.

It is an arithmetic number, because the mean of its divisors is an integer number (2557776030).

Almost surely, 2^9378512099 is an apocalyptic number.

9378512099 is a deficient number, since it is larger than the sum of its proper divisors (852592021).

9378512099 is a wasteful number, since it uses less digits than its factorization.

9378512099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852592020.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 9378512099 is about 96842.7183581708. The cubic root of 9378512099 is about 2108.8449387380.

The spelling of 9378512099 in words is "nine billion, three hundred seventy-eight million, five hundred twelve thousand, ninety-nine".