9400778473 has 4 divisors (see below), whose sum is σ = 9953765460. Its totient is φ = 8847791488.

The previous prime is 9400778459. The next prime is 9400778531. The reversal of 9400778473 is 3748770049.

9400778473 is digitally balanced in base 2, 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: 3748770049 = 389 ⋅9636941.

It can be written as a sum of positive squares in 2 ways, for example, as 5465349184 + 3935429289 = 73928^2 + 62733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9400778473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9400778423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276493468 + ... + 276493501.

It is an arithmetic number, because the mean of its divisors is an integer number (2488441365).

Almost surely, 2^9400778473 is an apocalyptic number.

It is an amenable number.

9400778473 is a deficient number, since it is larger than the sum of its proper divisors (552986987).

9400778473 is a wasteful number, since it uses less digits than its factorization.

9400778473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552986986.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The square root of 9400778473 is about 96957.6117331693. The cubic root of 9400778473 is about 2110.5125528708.

The spelling of 9400778473 in words is "nine billion, four hundred million, seven hundred seventy-eight thousand, four hundred seventy-three".