9040978823 has 4 divisors (see below), whose sum is σ = 9285329640. Its totient is φ = 8796628008.

The previous prime is 9040978801. The next prime is 9040978841. The reversal of 9040978823 is 3288790409.

It is a happy number.

9040978823 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3288790409 = 49033 ⋅67073.

It is a cyclic number.

It is not a de Polignac number, because 9040978823 - 2⁸ = 9040978567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9040978883) 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, 122175353 + ... + 122175426.

It is an arithmetic number, because the mean of its divisors is an integer number (2321332410).

Almost surely, 2^9040978823 is an apocalyptic number.

9040978823 is a deficient number, since it is larger than the sum of its proper divisors (244350817).

9040978823 is a wasteful number, since it uses less digits than its factorization.

9040978823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244350816.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 9040978823 is about 95084.0618768466. The cubic root of 9040978823 is about 2083.2360579534.

The spelling of 9040978823 in words is "nine billion, forty million, nine hundred seventy-eight thousand, eight hundred twenty-three".