9478978233 has 4 divisors (see below), whose sum is σ = 12638637648. Its totient is φ = 6319318820.

The previous prime is 9478978217. The next prime is 9478978253. The reversal of 9478978233 is 3328798749.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3328798749 = 3 ⋅1109599583.

It is a cyclic number.

It is not a de Polignac number, because 9478978233 - 2⁴ = 9478978217 is a prime.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 1579829703 + ... + 1579829708.

It is an arithmetic number, because the mean of its divisors is an integer number (3159659412).

Almost surely, 2^9478978233 is an apocalyptic number.

It is an amenable number.

9478978233 is a deficient number, since it is larger than the sum of its proper divisors (3159659415).

9478978233 is a wasteful number, since it uses less digits than its factorization.

9478978233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159659414.

The product of its digits is 18289152, while the sum is 60.

The square root of 9478978233 is about 97360.0443354459. The cubic root of 9478978233 is about 2116.3484542845.

The spelling of 9478978233 in words is "nine billion, four hundred seventy-eight million, nine hundred seventy-eight thousand, two hundred thirty-three".