9049878009 has 10 divisors (see below), whose sum is σ = 13518953690. Its totient is φ = 6033251952.

The previous prime is 9049877983. The next prime is 9049878023. The reversal of 9049878009 is 9008789409.

It can be written as a sum of positive squares in only one way, i.e., 5875682409 + 3174195600 = 76653^2 + 56340^2 .

It is not a de Polignac number, because 9049878009 - 2¹³ = 9049869817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9049878029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 55863364 + ... + 55863525.

It is an arithmetic number, because the mean of its divisors is an integer number (1351895369).

Almost surely, 2^9049878009 is an apocalyptic number.

It is an amenable number.

9049878009 is a deficient number, since it is larger than the sum of its proper divisors (4469075681).

9049878009 is a wasteful number, since it uses less digits than its factorization.

9049878009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111726901 (or 111726892 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 9049878009 is about 95130.8467795804. The cubic root of 9049878009 is about 2083.9193551223.

The spelling of 9049878009 in words is "nine billion, forty-nine million, eight hundred seventy-eight thousand, nine".