9478978223 has 24 divisors (see below), whose sum is σ = 11243500800. Its totient is φ = 7938089280.

The previous prime is 9478978217. The next prime is 9478978253. The reversal of 9478978223 is 3228798749.

It is not a de Polignac number, because 9478978223 - 2⁴ = 9478978207 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 (9478978253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794738 + ... + 806576.

It is an arithmetic number, because the mean of its divisors is an integer number (468479200).

Almost surely, 2^9478978223 is an apocalyptic number.

9478978223 is a deficient number, since it is larger than the sum of its proper divisors (1764522577).

9478978223 is a wasteful number, since it uses less digits than its factorization.

9478978223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12383 (or 12372 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 59.

The square root of 9478978223 is about 97360.0442840902. The cubic root of 9478978223 is about 2116.3484535403.

The spelling of 9478978223 in words is "nine billion, four hundred seventy-eight million, nine hundred seventy-eight thousand, two hundred twenty-three".